[caspergroot]

Ive got this weird problem with my cnc mill. All 2d and 3d operations work fine, but as soon as I need to reposition my stock to another face, the work offset seems to be wrong.
Ive tried zeroing with a zeroing tool on the stock corner, putting it in the end of my vice so there is an easy point to recognize when repositioning my stock. I use mastercam and in both top and bottom wcs Ive set the origin to the corner that I can recognize.

the part is quite simple, rectangular shape with an off center pocket and contour toolpath. the idea is to cut the pocket, do 6/10 of the depth contour, flip it and do 6/10 again.

Can someone help me with this specific problem or just point me in the right direction? Most of the online post are about using a hole that goes trough the part, but this is not an option and in my head the vise should work some way.

attached is the part in step format.