Maybe I was missing something, I did not realize the Vivitar VI has a tilting lensplate. Does it just have a center mark or is there a click or detent. On my Durst, there is a firm detent at the middle position. The baseboard tilt lock in the middle position with a tapered screw. In that enlarger the actual alignment of the lens stage and baseboard are both separate from the tilting mechanisms.
Originally Posted by mr rusty