I've used a Hexar RF with a CV25/4 and a CV 90/3.5. Never had any focusing problems. I also use a Hexanon50 on a Bessa-T with the same result, that is; no focusing problems.
A 35/1.2 I've never tried, but if the focus is a hair off, you can always have the body adjusted. Underneath the bayonet mount, where the four screws that hold it to the body are, there are some small brass shims. These can be removed or added to fine-tune the mount/flange distance.