Quote Originally Posted by Mr Bill View Post
Something to keep in mind is that films are not all equally sensitive to scratching. Improving scratch resistance has long been a design goal with professional color neg films (I'd guess this is also true with B&W films, but have no basis to be sure).

My point is, being scratch-free on one film doesn't necessarily hold for all films. So if you find that scratches periodically show up, pay attention to the type of film being use.
You're correct - I was given an old Exa camera a few years ago, fine with Kodachrome and most B&W, but scratched very badly on other E6. Yet the pressure plate seemed clean and free of anything abrasive, never solved what was wrong.