That Hasselblad back might have just needed the right touch. I fixed one last year that sat in a damp garage for a decade, and now it runs smooth. The feeling when a stubborn piece finally clicks is worth the extra tries. I get what brooke_taylor44 is saying about knowing when to quit, but I've seen too many things brought back from the dead to agree. Giving up after one afternoon in the heat might mean you walked away from a fixable problem. Sometimes the real win is in not listening to everyone who says it's trash.

Yeah, that "heat the metal just enough" part is key. I used to think you had to get it really hot, like with a torch, but that just warps everything. A heat gun on high for maybe 30 seconds is the sweet spot, then the quick cold shock pops it right out. Works on older steel fenders too, just takes a couple more tries sometimes.