You're building a coronoa discharge machine? Is that for subbing the substrate? I'm sure you mention it somehwere, but are you using polyester or an acetate film?
Last night I coated some of Photoformulary's melinex with a simple gelatin solution (DCG dye-transfer matrices) and this morning was shagrin to find that the gelatin peeled right off!
Is it possible I coated the wrong side? I used the side that they indicated, but it's possible that someone made a mistake at some point (myself a likely candidate) because both sides look nearly identical.