i have, a question this was driving me crazy today during raceing my s5 runs good with, good punch with the 53 pipe and the idle isnt to high its about 1mm well when im on the track for the first few laps its fine. than all the sudden i start lousing punch.. likes its rich or something when it gets about in 200 s ? i did richen the low end about 1/4 turn and leaned the top about the same.
and when i pitted when i was on the throttle it sounded like a lean bog even though there was enough smoke ?
so is it the idle do i need to lower it when i go on the track about 2 to 3 laps ?
my gear mesh did get loose but i dont think that had anything to do with it .
now my carb was sticking a little not bad though.