Due to my own personal stupidity I managed to strip the threaded plastic hole in the master cylinder of my rear Hayes disk. The plug screw seems to not be leaking for now, but it turns and doesnt ever really get tight fitting. Where can I get individual parts for this? I would even be happy having to buy the whole lever assembly but all I can find on any of the on-line stores is the whole setup from lever back to disk. Granted that is not really to expensive any more, but if I could pay $50 instead of $100 I would be happy.