I agree with Big Poppy.When you replaced the screws with Brents you have to make sure you get out the very small ss washer and the o-ring.If you don't it could cause the issues you are having. I had a bit a trouble when I changed to Brents(lost a o-ring)did'nt notice losing it until I started her up and she ran like crap.I had read a thread about watching out for the o-ring and washer. I took them out and found I mas missing the o-ring.Replaced it and every thing runs great its a whole lot easier to adjust with Brents screws.

Pete

03 Blue and Silver, AI removed,Thunderbike Pipes,132 mains,45 pilots,snorkles gone,k+n, 2 3/4 idle screws