I've recently noticed scratched 35mm negatives after development. This is more maddening that dust, imho. They're longitudinal on the film and seem intermittant. I've only just begun to try to track down the culprit, but my suspicions tell me its probably the tongs/squeegee... I recently started using a squugee to wipe my negatives. Since starting film development a couple of years ago, I've always relied on PhotoFlo. But after seeing a few drying spots on some negatives, I decided to try the squeegee in addition to the PhotoFlo. Now I'm noticing scratches. Does anyone use squeegees? Can they cause scratches? Do they have a life expectancy(mine are pretty old)? Do you PhotoFlo users get drying marks and what do you do about them?