I'm just getting into 4x5, and recently picked up some Polaroid 54 and a back for cheap. The film is good, but the back has this problem where the release button doesn't always release the film (for future processing). Thus, I have ended up with a handful of sheets of exposed film and good chemicals. Since I know the unexposed film lasts longer than the chemicals, I was wondering whether anyone has some unexposed 4x5 sheets with bad chems that I could glue the good pod onto. The film I have is 54, but I'd be willing to try anything, even color; since 809 negs with 804 paper and developer results in a sepia tone, 59 and 54 should be the same. I can trade for 35mm or 120 film, or pay paypal. Also, if anyone has a good 545 back that they'd be willing to part with for cheap, I'll take it.