Yeah I'm hearin you Muggzy I suppose allot of people would say welding the crank will maintain reliability but I'm not sure I want to pull down the motor just for that I'd rather wait until it needs a top end rebuild and do it all at once if you know what I mean, I suppose my biggest concern is detonation that will stuff a piston in no time flat which is why were probably hearing a standard bench mark of about +4 degrees. I know in cars we used to run +6 degrees all the time maybe its different for a two stroke.