FIRST thanx for any help. i bought the blue beast in the dark, it has lots of previous owner fixes looks like in the dark/ got a good deal rode 4 hours home on it .due before is light for a big bike .scratched good...him too.left red light in a hurry after riding off a cliff .yea i didnt scratch it any more than it was allready scratched , thing is tough , now have a misturous knock heavy knock/ hold your hand over output shaft on transmission an feel it . needed tire anyway. so got new tire on a while its off doing best on knock, due at one shop heard it took it to him on center stand he siad DONT RIDE IT , so its my only way of going. no chips or pieces in rearend pulled swing arm greased bearings, no visible wear , i am an experienced mech on big trucks an cars so i can do this, now after all inspections ujoint is good, pulled motor split cases ,truly a million pieces, ok ,.got tranny in hand cant see nothing broke. took all pieces including rearend tranny lock stock an barrel to schooled dealer , he didnt find nothing either . bearings are fine casing halves are fine , knock only in gear not idle or hard throttle on stand , it is loud casing has no scoring from gears ,only thing i found is where dude before me left out 3 of the ???locks or shims that go in the case for the bearings on tranny 2 peice split ring ,knock is scary dont want to get hurt. younguns at shop said he dont know .he went to school. 4 people looked at it at dealership????????