I hope somebody can help me with the following problem. I have just received an “8" Digital Height Gauge with the USB interface cable with touch trigger” from Tormach for my 770 mill.. When I follow the procedure 6.6.1.1 on page 69, I do not get the “Zero Height Gauge Z” button on the “Offsets” tab. I have tried the USB ports at the front as well as at the back of the PathPilot controller. Do you perhaps a solution for me?