Hi all. I'm new to 4x5, and I have a question. For practice, I sacrificed a sheet of film to make sure I was getting a handle on the loading process for film backs, and I noticed upon removing the sheet that there are very fine scratches on the rear of the sheet (non-emulsion side). I would think that these would be inconsequential, and I would not see them except under very extreme enlargement. I just want to make sure I'm not botching sheets before I even shoot and develop. I'm very careful when loading, and I make sure that the sheet does not touch the bottom flap of the film back. There is no debris in the holder or on the film. As I said, they're very fine scratches, just a curiosity. Thank you!