 // Calibration process for "C" Motor 2
 void calibrate2(boolean run) {
   long oldPosition = stepper2.currentPosition();
-  stepper2.setSpeed(-600);
+  stepper2.setSpeed(-2000);
   while (digitalRead(optInpin2) == LOW) {
     stepper2.runSpeed();
     busLoop();

  stepper3.setCurrentPosition(0);       // Set "Zero" position "C" Motor 3
  calibrate1(false);                    // Calibration function "L" Motor 1
  calibrate2(false);                    // Calibration function "C" Motor 2
  //calibrate3(false);                  // Calibration function "C" Motor 3
}

// Calibration process for "L" Motor 1
void calibrate1(boolean run) {
  long oldPosition = stepper1.currentPosition();
  stepper1.setSpeed(-1500);
  while (digitalRead(optInpin1) == LOW) {
    stepper1.runSpeed();
    busLoop();

// Calibration process for "C" Motor 3
void calibrate3(boolean run) {
  long oldPosition = stepper3.currentPosition();
  stepper3.setSpeed(-2000);
  while (digitalRead(optInpin3) == LOW) {
    stepper3.runSpeed();
    busLoop();
