I AM USING REPETIER-HOST TO CALIBRATE A ROSTOCK MAX V2 PRINTER. ALL WAS GOING WELL - WAS CONTINUALLY GOING TO A SPECIFIC POINT TO FIND Z HEIGHT FOR THE DELTA ARM TO THE HEAT BED WHEN WITH OUT WARNING THE TRAVEL WENT PASS THE SPECIFIC COORDINATE AND CRASHED INTO THE Z TOWER. I CAN GET THE PRINTER TO HOME, BUT NOW MY X - Y TRAVEL IS OVER TRAVELING BEYOND THE HEAT BED WHILE MY ABSOLUTE COORDINATE SHOULD BE WELL WITHIN THE CONFINDS OF THE BED. NOT SURE WHERE TO LOOK FOR POSSIBLE SOLUTIONS?