Hi. Find second problem. Reading up on homing the machine on the mach3 forum. The write up states.move the spindle to the center of the bed. Press ref all and zero the dro. Then zero machine goords. Both sections should now read zero on all axis. Then go to off sets and check its reading G54 and the axis are also reading zero. But I cant get the machine goords to zero, and the off set will not allow me to reset the axis readings or change anything bar the press the machine goords button and zero that dro, but then it returns to the off set reading. What am I doing wrong. The g code was made using vcarve.but I think its the offset problem that needs sorting.