Perhaps you could try and level the neg carrier and baseboard and go from there ? If you have some time, perhaps try different things (without altering the V35 of course) and if nothing works, send it back.

I still can't imagine the neg and lens are out of whack, does it look off visually from the front ? Can you isolate which way it is off from looking at a projected image ?

This is kinda like figuring out davidb's neg bubbles processing probs...