Yrah.. So I just snapped my second starter shaft in a matter of about 8 months or so.. did my tear down and found both were loose and both had one wire where the sauder had broke. So neither were connected. When I sent my heads off and all that the machinest did pretty much what Curtis said, checked em after redoing em and whatnot.. So when I threw the starter back in I left my excite wire disconnected and hit my start button and both clicked so I know I'm good now. But basically u can disconnect ur excite wire on ur starter and check em that way. Also just press down on them and u can feel if they are loose