Well I guess mine is still to new or a week one. I havent changed a thing on it except the muffler.

Today I ran it with the Bisson again and pulled 7,100 with it. I installed the stock muffler and pulled 7,300.
I then installed the stock bowman ring and got a quick 7,700 and then settled to 7,600. a good 300 rpm just with a ring change and no time on it. Tomorrow i will change from the stock bowman to my modded Bowman ring.