Well I finaly got a chance to run it with the shorter regulator "plunger" installed and that fixed the problem. Now to get it to run I have backed the reg screw out about a 1/16" past flush. I had to do that to get it to idle.

It runs fine in a mid throttle flight but it can not sustain full throttle for very long. Now it seems lean around the midrange and maybe lean on the highend.

Ant thoughts.....