hi max. there is your problem with your base work offset. x and y should be zero. if you look at your video that you took, your g54 offset that you set was approx. x216.xxx and when the machine moved it moved to x334.xxx which is 118mm more. once you set your base to x0 y0 your work offsets will move to the correct place. this base figure is where all the other offsets come from, so also beware of your z offset being 88. My z offset is set to zero aswell so all my z offsets in g54-7 are a positive figure above the bed. I hope this has helped you.