diff --git a/main.c b/main.c
index 5b78e97..87893d2 100644
--- a/main.c
+++ b/main.c
@@ -1064,6 +1064,7 @@ config_t config = {
    /* ultra */ {   -3.49,  -1.82,  0.74,   0.69,   -2.16,  -2.23,  0.81,   0.06,   -0.1,   0.82,   0.65,   1.89,   1.64,   2.24,   1.32,   1.62,   0.76,   1.77,   7.57,   7.35,   },
   },
   .setting_frequency_30mhz = 30000000ULL * FREQ_MULTIPLIER,
+  .gridlines = 6,
   .cor_am = 0,
   .cor_wfm = 0,
   .cor_nfm = 0,
diff --git a/plot.c b/plot.c
index 111148e..bede836 100644
--- a/plot.c
+++ b/plot.c
@@ -1116,15 +1116,16 @@ draw_cell(int m, int n)
 
   c = GET_PALTETTE_COLOR(LCD_GRID_COLOR);
   // Draw rectangular plot (40 system ticks for all screen calls)
+  const int step = 2;
   if (trace_type & RECTANGULAR_GRID_MASK) {
     for (x = 0; x < w; x++) {
       if (rectangular_grid_x(x + x0)) {
-        for (y = 0; y < h; y++) cell_buffer[y * CELLWIDTH + x] = c;
+        for (y = 0; y < h; y+=step) cell_buffer[y * CELLWIDTH + x] = c;
       }
     }
     for (y = 0; y < h; y++) {
       if (rectangular_grid_y(y + y0)) {
-        for (x = 0; x < w; x++)
+        for (x = 0; x < w; x+=step)
           if ((uint32_t)(x + x0 - CELLOFFSETX) <= WIDTH)
             cell_buffer[y * CELLWIDTH + x] = c;
       }
diff --git a/si4468.c b/si4468.c
index a415669..42a0d1f 100644
--- a/si4468.c
+++ b/si4468.c
@@ -536,7 +536,6 @@ void ADF4351_spur_mode(int S)
 
 void ADF4351_R_counter(int new_R)
 {
-  return;
   if (new_R == old_R)
     return;
   old_R = new_R;