Hello I just did my first stock rebuild on a 03 warrior and already sold it. Im going to take my next build up a notch. I have seen allot of old threads from 20011 and 12 on parts but wondering if there are new ones out there. I have all stock heads jugs and carbs. The one im starting on has a bad main so new crank to start off what simple motor mods could I do without more machining other than hone or bore? How much of a bore can I do before I need to machine the case?