     stepperArm.run(); 
      
     // first character sent switches us into LOADED mode
-    // 97="a", 98="b", 99="c", 100="d"
+    // 97="a", 98="b", 99="c", 100="d", 120="x"
     if (Serial.available() > 0) {        
       inputString = String(Serial.read());
       if (!LOADED) {

              myserv.write(suck - extraServoBump);
              timeStart = currentTime;
   }
  else if (stressedServo && ((currentTime - timeStart) > 900)) {
    myserv.write(restServoPos);
    if (DEBUG)
      Serial.println("go to resting spot: " + String(restServoPos));

  currentServoPos = myserv.read();
  
  // after allowing time for travel, check stress levels...
  if (((currentTime - timeStart) > HOLDms)) {
    if (currentServoPos == (drop + extraServoBump)) {
        restServoPos = drop;
        stressedServo = true;
