my negatives are always scratched, no matter what i do. i roll them on stainless reels, and i've been storing them together by roll in envelopes, if that makes a difference. all you longtime darkroom people, what are some tips to keep my negs clean and undamaged? also, i've found small crescent shaped black marks on my 120 negs, like uneveness in developing or a light leak. i'm using a yashicamat 124g borrowed from my college, and since these marks aren't appearing on my 35mm negs, i'm thinking that the camera might be the culprit, or maybe slipping of the film on the spool between shooting and processing? any insight as to what's going on and/or how i can deal with it? i'd appreciate any advice you could give me.