On all the photos I looked at (not many), the lens wasn't perfectly aligned, whether there was an adaptor between the lens and the body (Leica M), or not (Barnack). Use Google to see it for yourself.
You could either get the lens adjusted by a repair tech, or get an uncut adapter (unlikely...) which you can take together with the lens to a machine shop so they can cut the M39 threads exactly the way you need them to start.
If the photos turn out fine (I have little doubt), I would just leave it the way it is and after a few rolls you wouldn't really notice it anymore.
Last edited by Aron; 01-09-2012 at 07:02 AM. Click to view previous post history.