I haven't used my polaroid 454i filmback for quite some time and found that the hooks which hold the rollers are stuck. They won't move at all.
Years ago there seemed to be tutorials around showing how to take apart the whole back for cleaning rather than just unhooking the top rollers like the instructions on the back tell you to, but I must be putting all the wrong search terms as soon as I can't find them anymore.
So far I have tried WD40 on the hooks, but no joy so far. Any ideas how I might be able to save my filmback?