diff --git a/main.c b/main.c
index 82d04a6..a9688dd 100644
--- a/main.c
+++ b/main.c
@@ -2208,13 +2208,13 @@ VNA_SHELL_FUNCTION(cmd_color)
 #if CH_CFG_USE_REGISTRY == FALSE
 #error "Threads Requite enabled CH_CFG_USE_REGISTRY in chconf.h"
 #endif
+static const char *states[] = {CH_STATE_NAMES};
 VNA_SHELL_FUNCTION(cmd_threads) 
 {
-  static const char *states[] = {CH_STATE_NAMES};
   thread_t *tp;
   (void)argc;
   (void)argv;
-  shell_printf("stklimit|   |stk free|    addr|refs|prio|    state|        name"VNA_SHELL_NEWLINE_STR);
+  shell_printf("stklimit|        |stk free|    addr|refs|prio|    state|        name"VNA_SHELL_NEWLINE_STR);
   tp = chRegFirstThread();
   do {
     uint32_t max_stack_use = 0U;
@@ -2783,8 +2783,8 @@ void hard_fault_handler_c(uint32_t *sp)
   uint32_t pc  = sp[6];
   uint32_t psr = sp[7];
   int y = 0;
-  int x = 20;
-  static  char buf[16];
+  int x = OFFSETX + 1;
+  static  char buf[96];
   ili9341_set_background(0x0000);
   ili9341_set_foreground(0xFFFF);
 
@@ -2805,7 +2805,27 @@ void hard_fault_handler_c(uint32_t *sp)
   plot_printf(buf, sizeof(buf), "LR  0x%08x",  lr);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
   plot_printf(buf, sizeof(buf), "PC  0x%08x",  pc);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
   plot_printf(buf, sizeof(buf), "PSR 0x%08x", psr);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
-
+#ifdef ENABLE_THREADS_COMMAND
+  thread_t *tp;
+  tp = chRegFirstThread();
+  do {
+    uint32_t max_stack_use = 0U;
+#if (CH_DBG_ENABLE_STACK_CHECK == TRUE) || (CH_CFG_USE_DYNAMIC == TRUE)
+    uint32_t stklimit = (uint32_t)tp->wabase;
+#if CH_DBG_FILL_THREADS == TRUE
+    uint8_t *p = (uint8_t *)tp->wabase; while(p[max_stack_use]==CH_DBG_STACK_FILL_VALUE) max_stack_use++;
+#endif
+#else
+    uint32_t stklimit = 0U;
+#endif
+    plot_printf(buf, sizeof(buf), "%08x|%08x|%08x|%08x|%4u|%4u|%9s|%12s",
+             stklimit, (uint32_t)tp->ctx.sp, max_stack_use, (uint32_t)tp,
+             (uint32_t)tp->refs - 1, (uint32_t)tp->prio, states[tp->state],
+             tp->name == NULL ? "" : tp->name);
+    ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+    tp = chRegNextThread(tp);
+  } while (tp != NULL);
+#endif
   shell_printf("===================================\r\n");
 #else
   (void)sp;
diff --git a/sa_core.c b/sa_core.c
index 202c935..7eb5704 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -1322,40 +1322,22 @@ float perform(bool break_on_operation, int i, uint32_t f, int tracking)     // M
   // -----------------------------------------------------  modulation for output modes ---------------------------------------
   if (MODE_OUTPUT(setting.mode)){
     if (setting.modulation == MO_AM_1kHz || setting.modulation == MO_AM_10Hz) {               // AM modulation
-      int p = setting.attenuate * 2 + am_modulation[modulation_counter];
-      if (p>63)
-        p = 63;
-      if (p<0)
-        p = 0;
+      int p = setting.attenuate * 2 + am_modulation[modulation_counter++];
+      if      (p>63) p = 63;
+      else if (p< 0) p =  0;
       PE4302_Write_Byte(p);
-      if (modulation_counter == 4) {  // 3dB modulation depth
+      if (modulation_counter == 5)  // 3dB modulation depth
         modulation_counter = 0;
-      } else {
-        modulation_counter++;
-      }
-      if (setting.modulation == MO_AM_10Hz)
-        my_microsecond_delay(20000);
-      else
-        my_microsecond_delay(180);
-//      chThdSleepMicroseconds(200);
+      my_microsecond_delay(setting.modulation == MO_AM_10Hz ? 20000 : 180);
     }
     else if (setting.modulation == MO_NFM || setting.modulation == MO_WFM ) { //FM modulation
       SI4432_Sel = 1;
-      int offset;
-      if (setting.modulation == MO_NFM ) {
-        offset = nfm_modulation[modulation_counter] ;
-        SI4432_Write_Byte(SI4432_FREQ_OFFSET1, (offset & 0xff ));  // Use frequency hopping channel for FM modulation
-        SI4432_Write_Byte(SI4432_FREQ_OFFSET2, ((offset >> 8) & 0x03 ));  // Use frequency hopping channel for FM modulation
-      }
-      else {
-        offset = wfm_modulation[modulation_counter] ;
-        SI4432_Write_Byte(SI4432_FREQ_OFFSET1, (offset & 0xff ));  // Use frequency hopping channel for FM modulation
-        SI4432_Write_Byte(SI4432_FREQ_OFFSET2, ((offset >> 8) & 0x03 ));  // Use frequency hopping channel for FM modulation
-      }
-      if (modulation_counter == 4)
+      int offset = setting.modulation == MO_NFM ? nfm_modulation[modulation_counter] : wfm_modulation[modulation_counter] ;
+      SI4432_Write_Byte(SI4432_FREQ_OFFSET1, (offset & 0xff ));  // Use frequency hopping channel for FM modulation
+      SI4432_Write_Byte(SI4432_FREQ_OFFSET2, ((offset >> 8) & 0x03 ));  // Use frequency hopping channel for FM modulation
+      modulation_counter++;
+      if (modulation_counter == 5)  // 3dB modulation depth
         modulation_counter = 0;
-      else
-        modulation_counter++;
       my_microsecond_delay(200);
 //      chThdSleepMicroseconds(200);
     }
diff --git a/ui.c b/ui.c
index 0f49589..8483d3a 100644
--- a/ui.c
+++ b/ui.c
@@ -1907,29 +1907,22 @@ ui_mode_normal(void)
 static void
 lever_move_marker(int status)
 {
-  int step = 1;
-  int count = 0;
+  uint16_t step = 1<<2;
   do {
     if (active_marker >= 0 && markers[active_marker].enabled) {
-      if ((status & EVT_DOWN) && markers[active_marker].index > 0) {
-        markers[active_marker].index -= step;
+      if (status & EVT_DOWN) {
+        markers[active_marker].index -= step>>2;
         if (markers[active_marker].index < 0)
           markers[active_marker].index = 0 ;
-        markers[active_marker].frequency = frequencies[markers[active_marker].index];
-        redraw_marker(active_marker);
       }
-      if ((status & EVT_UP) && markers[active_marker].index < sweep_points-1) {
-        markers[active_marker].index += step;
+      if (status & EVT_UP) {
+        markers[active_marker].index += step>>2;
         if (markers[active_marker].index  > sweep_points-1)
           markers[active_marker].index = sweep_points-1 ;
-        markers[active_marker].frequency = frequencies[markers[active_marker].index];
-        redraw_marker(active_marker);
-      }
-      count++;
-      if (count > 10) {
-        step *= 2;
-        count = 0;
       }
+      markers[active_marker].frequency = frequencies[markers[active_marker].index];
+      redraw_marker(active_marker);
+      step++;
     }
     status = btn_wait_release();
   } while (status != 0);
diff --git a/ui_sa.c b/ui_sa.c
index 9faf6a1..425c356 100644
--- a/ui_sa.c
+++ b/ui_sa.c
@@ -1679,11 +1679,6 @@ static void menu_item_modify_attribute(
     if (item == 5 && get_waterfall()){
       mark = true;
     }
-#ifdef __SPUR__
-    if (item == 5 && setting.spur) {
-      mark = true;
-    }
-#endif
   } else if (menu == menu_settings) {
     if (item ==0 && setting.tracking_output){
       mark = true;