diff --git a/README.MD b/README.MD
index e930fd2..b512a9a 100644
--- a/README.MD
+++ b/README.MD
@@ -1,20 +1,22 @@
+6hp multichannel clock utility designed to be low cost and DIY friendly.
+
+> It is like a "Pamela's 'very light' Workout" ;)
+> —u/BBougre
+
 Features:
+- 24ppqn internal clock with master BPM
 - 6 output channels
-- Master BPM
 - Separate divider or multiplier per chennel (from /32 to x24)
-- Per-channel random pulse skip chance
+- Per-channel random pulse skip probability setting
+- Per-channel offset setting
 - 2 inputs for external modulation (assignable per channel)
 - All channel settings and bpm are saved on play/pause and recalled on power up
+- 2 external clock modes (24ppqn and beat)
 
 TODO:
-- add offset parameter
-- external clock
 - swing
 - settings (input mode, pulse length)
 - expanders with midi/tap tempo etc
 
 Timer library available here
-https://github.com/PaulStoffregen/FlexiTimer2
-
-KiCad SSD1306 display component
-https://github.com/pforrmi/KiCad-SSD1306-128x64
\ No newline at end of file
+https://github.com/PaulStoffregen/FlexiTimer2
\ No newline at end of file
diff --git a/software/GToE/GToE.ino b/software/GToE/GToE.ino
index 8a0c80f..5c1372d 100644
--- a/software/GToE/GToE.ino
+++ b/software/GToE/GToE.ino
@@ -106,6 +106,7 @@ void setup() {
     saveState();
     EEPROM.write(1023, 'K');
   }
+  calculateCycles();
 
   pinMode(ENC_BTN_PIN, INPUT_PULLUP);
   pinMode(START_STOP_BTN_PIN, INPUT_PULLUP);
@@ -117,8 +118,6 @@ void setup() {
     pinMode(outsPins[i], OUTPUT);
   }
 
-  calculateCycles();
-
   display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
 
   //Splash screen
@@ -188,12 +187,8 @@ void sendTriggers() {
   if (pulseCount == 0) {
     for (int i = 0; i<6; i++) {
       if (playingModes[i] != clockModes[channels[i].mode]) {
-        playingModes[i] = clockModes[channels[i].mode];
-        if (playingModes[i] > 0) {
-          channelPulsesPerCycle[i] = (playingModes[i] * PPQN) - 1;
-        } else {
-          channelPulsesPerCycle[i] = (PPQN / abs(playingModes[i])) - 1;
-        }
+        //playingModes[i] = clockModes[channels[i].mode];
+        calculateCycles();
         channelPulseCount[i] = 0;
       }
     }
@@ -216,6 +211,7 @@ void sendTriggers() {
 
 void calculateCycles() {
   for (int i = 0; i<6; i++) {
+  playingModes[i] = clockModes[channels[i].mode];
     if (playingModes[i] > 0) {
       channelPulsesPerCycle[i] = (playingModes[i] * PPQN) - 1;
     } else {
@@ -302,17 +298,22 @@ void checkInputs() {
         bpm = MINBPM;
       }
       updateTiming();
-    } else if (displayTab != 0 && insideTab == 0) {
+    } else if (displayTab != 0 && insideTab == 0) {         //subdivision
       channels[displayTab-1].mode = channels[displayTab-1].mode - change;
       if (channels[displayTab-1].mode == 65535) {   //65535 is 0-1 for unsigned vars
         channels[displayTab-1].mode = 0;
       } else if (channels[displayTab-1].mode > (sizeof(clockModes)/sizeof(int)) - 1) {
         channels[displayTab-1].mode = (sizeof(clockModes)/sizeof(int)) - 1;
-      }        
+      }
+      if (!isPlaying) {
+        calculateCycles();
+      }
     } else if (displayTab != 0 && insideTab == 1) {         //random
       channels[displayTab-1].random = channels[displayTab-1].random + change;
-      if (channels[displayTab-1].random > 9 || channels[displayTab-1].random < 0) {
+      if (channels[displayTab-1].random == 65535) {
         channels[displayTab-1].random = 0;
+      } else if (channels[displayTab-1].random > 9) {
+        channels[displayTab-1].random = 9;
       }
     } else if (displayTab != 0 && insideTab == 2) {         //modulation
       channels[displayTab-1].modulationRange = channels[displayTab-1].modulationRange + change;
@@ -322,10 +323,10 @@ void checkInputs() {
       }
     } else if (displayTab != 0 && insideTab == 3) {         //offset
       channels[displayTab-1].offset = channels[displayTab-1].offset + change;
-      if (channels[displayTab-1].offset >= channelPulsesPerCycle[displayTab-1]) {
-        channels[displayTab-1].offset = channelPulsesPerCycle[displayTab-1];
-      } else if (channels[displayTab-1].offset <= 0 ) {
+      if (channels[displayTab-1].offset == 65535) {
         channels[displayTab-1].offset = 0;
+      } else if (channels[displayTab-1].offset >= channelPulsesPerCycle[displayTab-1]) {
+        channels[displayTab-1].offset = channelPulsesPerCycle[displayTab-1];
       }
     } 
     updateScreen();
@@ -461,6 +462,8 @@ void updateScreen() {
     display.setCursor(58,44);
     display.print(F(" OFT:"));
     display.print(channels[displayTab-1].offset);
+    display.print(F("/"));
+    display.print(channelPulsesPerCycle[displayTab-1]+1);
     display.print(F(" "));
   }