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My brake drums are incredibly rusted and way over do. I have wacked with a hammer, heated with a torch, used perpetrator fluid but they won't budge at all. They spin freely, brake is off, but they feel fuses. The 2013 drums have a different sized thread and I have already stripped a couple bolts trying to figure out what size they are. Please help me, quite frustrated here. If I am able to find them somewhere on the care that would be awesome. Again they are much larger than the m8, and feel almost the same size as the studs