If you are tray developing film watch out for the dimpled part - something to do with the plastic moulding process - it will scratch your 8x10 negs when you agitate ('click clack') nicely over an area approx 3x4" area :rolleyes: (emulsion side is worse, but base isn't immune)

I sanded mine down flat with the rest of the tray - no more probs, did wonder however why this problem hadn't been mentioned anywhere that I could find up to that point ...