We have a Hypertherm HD1071 w/ A D-11 controller and a rsvp301 Torch Height Control. Having problems with the torch dragging the plate about 1" after it does its pierce and starts its cut path. It does not do this every time. We have M51 programed at the start . Torch comes down, touches the plate ,pierces fine but when it should drop to the cut height it drops too far.
OOPS should read HD 1070