[jaguar]

The exhaust port being higher than BDC actually benefits low end power which is what the KDX is all about. But you should use JBWeld to make a ramp for the transfer bottoms so that edge won't exist and won't hinder top end power. But there's an art and a science to using JBWeld in the ports so it never falls off. Eric Gorr knows how.

 

[jaguar]

Squish height depends on the amount of squish volume needed for your engine. Please read about this at www.dragonfly75.com/moto/sqVelocity.html