Ger21 ...From Your response to A.) I did a manual jog to one of the corners as you mentioned... I left about an inch and a half of play in each axis just incase the motors took off. Good thing I might add.... when I had the carriage in place I clicked the ref all button ( I was expecting no movement, and for the software to set this as the home position. However, the X & Y Axis remained static... BUT the Z AXIS began to move up at a fairly slow speed.... luckily I did have my E-Stop button installed so I hit that and it stopped the motion... Whew...lol