diff --git a/Cart_Reader/Cart_Reader.ino b/Cart_Reader/Cart_Reader.ino
index c40f76b..61274cc 100644
--- a/Cart_Reader/Cart_Reader.ino
+++ b/Cart_Reader/Cart_Reader.ino
@@ -1,8 +1,8 @@
 /**********************************************************************************
                     Cartridge Reader for Arduino Mega2560
 
-   Date:             28.10.2020
-   Version:          5.5
+   Date:             31.01.2021
+   Version:          5.6
 
    SD lib: https://github.com/greiman/SdFat
    LCD lib: https://github.com/adafruit/Adafruit_SSD1306
@@ -43,7 +43,7 @@
 **********************************************************************************/
 #include <SdFat.h>
 
-char ver[5] = "5.5";
+char ver[5] = "5.6";
 
 #include "options.h"
 
diff --git a/Cart_Reader/NP.ino b/Cart_Reader/NP.ino
index 7b8337f..26d7b76 100644
--- a/Cart_Reader/NP.ino
+++ b/Cart_Reader/NP.ino
@@ -610,7 +610,7 @@ void setup_SFM() {
   if (clock_offset > INT32_MIN) {
     clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, clock_offset);
   } else {
-    clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, -16000);
+    clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
   }
   clockgen.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
   clockgen.set_pll(SI5351_PLL_FIXED, SI5351_PLLB);
diff --git a/Cart_Reader/SNES.ino b/Cart_Reader/SNES.ino
index 45e74e3..b769414 100644
--- a/Cart_Reader/SNES.ino
+++ b/Cart_Reader/SNES.ino
@@ -387,7 +387,7 @@ void setup_Snes() {
   if (clock_offset > INT32_MIN) {
     clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, clock_offset);
   } else {
-    clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, -16000);
+    clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0, 0);
   }
 
   // Set clocks to 4Mhz/1Mhz for better SA-1 unlocking