Hi,

Just another opinion??? If you are sure there are no air leaks and no splits in the tubing try this method to "get in the ball park" with low speed jet tuning.

Connect a piece of fuel tubing to the needle valve about 18" long and open the throttle. Have a small screwdriver in the slot of the slow speed adjust and blow into the tubing. Yes air from your mouth. Adjust the screw until the setting is such that you can just blow through it. Then follow the tuning tips covered in great detial in this thread, (bruce88213 for example). I had a new in box motor that was more than 1.5 turns out!!!!

Cheers,

Colin