they rebuilt the whole motor..(seal and ring wise) as for finding out what was "exactly" wrong with it not really other than the carbon build up...they told my brother today that the motor will be mounted to the frame tomorrow night and should be good to go friday evening...heres hoping only downfall now in my way is $$$...i have none to spend on it, right now anyway and im hoping they can give me a new temp tag cause the tags expired on the 18th..the bike was in the shop like 2.5 out of the 4 i had it...so im prayin...