When completing the first of two part files the cutting head does not return home (x=0,y=0,z=0)as it used to. We then try Jog Home and it returns home except for the z axis (x=0, y=0, z= 0.039). We then try to "move" z but it dosnt move. We then "manually" move z with the "K" command. When we complete the second of the two part file it does return home. The problem has only developed recently. Where should i be lookiing to resolve the probelm.
Also when we stop the cutting head after the ghost run we cant jog home because we get a part file error 76.