[kmallick]

As I pointed out, I have heard of this several years ago..

Interesting.

Used with a 50mm lens the problem isn’t evident. Other owners might simply ignore it as it won’t affect the prints. It’s just a design idiosyncrasy of no real consequence, possibly annoying, but the prints that result will still be of excellent quality. Most owners probably ignore it.

Yes, the prints are still of excellent quality. I am not sure if I am being too anal, but I would prefer to get the best out of enlarging without any loss of Dmax due to stray light leaks. I can imagine that many don't notice or prefer to mask it out. So did I until this puzzling problem to figure out the stray lights took over me. Hopefully I am getting close to nailing it with all of your help and support.