Thanks for all the help with my coating film problems... Hologram's suggestion of KOH prebath of the film base (i said acetate first but it's polyester) worked fantastically with normal gelatin. It really sticked! I gave up hardening before shooting as the emulsion gets too hard, but do you think a pre hardening before developing is a good idea? I was thinking something like a 1% formaline solution. What do you think? Many thanks!