Not sure if the little incident you had is making disassembly worse than "usual", but the flex discs do not just fall out of the flanges once you get all the bolts out. You will need to get a very hefty screwdriver or pry bar in between the flange and flex disc and pry them apart (forcefully!). The metal inserts on the disc are a tight fit into the flange (even without any rust or crud involved).

Rick

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