I had a Z Axis Stall err after resolving a close cover err. I changed the switch and harness and then got the Z Axis Stall err. After checking all the harness connections finally got the machine to run. I was carving a pattern that was .25" deep but the Carve wright cut to close to .5" and staid in the same area. After stopping the machine and moving to a different pattern to see if that was the problem I got the close cover err. I did order the head connector board and was going to replace it, but I got Rev B and I have a Rev A board installed. Any thoughts on how to proceed.