I'm considering buying a bulk film loader from AP. I have two questions: 1) Is it idiot proof? I don't want to end up spending $100 on the loader and bulk film just to find out I can't manage to use it. I can load plastic reels with no problem, but I had "issues" with the stainless ones. 2) It would be pretty sweet to get 42 exposures on one roll (thus utilizing my negative preservers to the max). Is that possible?