Grump,yea,I have noticed the bike wanting to roll up on the speed as it gets loosened up.Since I changed pipes and jets,it really is hard to keep the speed down.I kind of figure to still keep the revs under a little control for the first thousand miles, but it is getting hard to control my right hand.Bikes sounds so good as it raps up.What fun! I really did/do not want to discuss oil brands, just the feel of the engine after switching to Synthetic's. Al