some great reading if your into the idea of truly "tuning" your two stroke, i'm not saying everyone should agree with this guys specs or that this is a two stroke bible or anything like that, take it for what it is, a very useful (and long) book of knowledge aimed at spreading knowledge about two strokes, i though it was very enlightening and i've even been a schooled tech for 4 years, enjoy
www.scribd.com/doc/9726341/Two-Stroke-Proformance-Tuning
www.scribd.com/doc/9726341/Two-Stroke-Proformance-Tuning