lack of oil and holding in the cluch while coasting will make them weld togehter, there cheap, like 12 bucks for both pieces, but if there welded togheter, u have to slip the cases in order to get them out. i never though about this before, is the spring on the piece going into the case? maybe its not in all the way to by some weired chance. after u pop off the clutch cover, theres a nut in the middle of the pressure plate. loosen it, then pop the piece out of the cases, inspect it, maybe the nob on the end is broken? but def get a clymers, its step by step, ebay has a ton of em