This is driving me crazy, I am a new owner, have been trying to carve 3D files on my SB 32 standard with PC router, the rough toolpath seems to go pretty smooth, but every time the fine toolpath runs for a few minutes the cutter will shift the Z position usually above the intended path and at about mid file it will start cutting deeper until it reaches into the spoilboard. The spoilboard has been surfaced, I zero the cutter with the C2 routine at the top of the board every time I change tools. No electric cables are in the path of the control box cables. Any ideas? Thanks!