That's coming from a Guy who has admitted to not ever building a 2 Stroke or 4 Stroke, has just recently bought a Broken 4 Stroke Engine to learn something, but still hasn't done anything yet, but he's an Expert in every field on here. Always ready with a Snide Comment, but no Good Info to contribute. Did you READ that 2 Stroke book yet I gave you links to, what over a year ago? Just like you, most people on here don't rebuild their own Engines and the very few who do, don't usually make Improvements. There called a Parts Changer, not Rocket Science. Engine Builders, Machine Parts, use better Parts than Stock, make things like a Tuned Pipe, add EFI, etc. I don't care if I get any replies, my goal is to show people their Engine can make more HP and still be reliable. I try to show web links when possible so they can READ for themselves.