Has any one rebuilt one of these motors before? I have a buddy who said the worst part is putting the seals back in. I am looking for some helpful tips and tricks t use whe I do th rebuild. I have not tore teh motor apart yet, but teh prop will not turn without alot of force and it feels like the damage is pretty bad. If i get to it soon I could post some pics, for diagnosis and for laughs. Thanks for the help.