i wish i could help more but i dont have a kx 65 or any clue as to the jetting. that link i sent you shows porting diagrams and explains all the goodies the factory techs do when you get or got your pipe. pro circuit should be able to give you a round about jetting for the bike but i couldnt find anything on it.
good luck.
if you get it worked out you'll be able to help the next guy out
A forum community dedicated to Kawasaki Motorcycle owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, maintenance, off-road, touring, street bikes, and more!