As stated in the article, Optimizing your 600 H.O. Im going to start toying with some of the mods he suggested. First is dropping the jets and needles for a start as I know mine does run a little fat. Second will be changing the primary spring and messing with the clickers and windage plate. Im just wondering who has tried all of the suggestions in that article and what you thought or what others changes you made to bring it to life. Please dont shoot this down by saying go out and get a clutch kit, I want to know what you guys have done on your own, thanks....