I am lucky enough to have one of the best weber experts in the Country living a few miles from me, he has set up nearly all the oval track cars that come in the top 10 around the nation. I actualy had him at the track for 3 hours 2 weeks ago trying to work it out... I think some people battle to think outside the box though. First thing im going to be trying is smaller chokes, One of the guys I race with said when he went up with reemed chokes he ran into the same problem, maybe somthing to do with how the fuel comes out the venturie and not having enough velocity at partial throttle with cornering g-force.