A little history of the bike. Its an 87 I got for $1700 all stock except for k&n with no air box. ran decent when I test rode it just a lil vibration. after riding it a few times I decided to check crank play, it had quite a bit on flywheel side, so a rebuild was in order. went next size up on bore (87mm) and replaced all gaskets seals and main bearings. Put on PT pipe and 88 flywheel. rejetted per Duncan racing suggestions. rode it a few times and the vibration came back. also has a tiny bit of play on flywheel side. I was thinking I seated crank seal too far in and it held the inner race just enough to let the crank spin in it but that's just a guess. any suggestions?