Pretty boy it sounds like your right you need a front bearing. Thats quick to need a new 1 but your not the only 1 it happened to. Break in is tough on these mills, I hope you used a heat gun for a while. The fr bearing takes most of the punishment from the bump box the occasional blown clutch bearing ect. Go uses some of the best bearings in the buisness so I suggest getting another 1 or go TKO or what ever you want. While your at it check your rod and you may want to TKO your rear bearing also its up to you. I swapped to a full set of TKO's in my ol PTM 5 port and I have to say I did see a difference. It idled like butter for ever and just seemed like the engine was much free-er I know thats not a word LOL.