I started trying to develop black and white film a few months ago, I shoot it when ever I can. I've developed around 4 or 5 rolls so far but every time I do it I get some slides with silver blotches. It is un-avoidable for me. I am using all of the recomemded times for the ilfotech DD-X developer and stop bath, fixer ect. Is it bad loading into the spool (plastic ones btw) or what?