help whith 06 rmz run prob

[vet101 racing]

ok so i am stuck.i have raced 4 strokes since the 501 huskey.and i can fix them all.butt this one has me stumped i have a deaccel back fire and a poor idle.i have adjusted valve they were fine.i rebuilt carb it was fine no dirt in it.so now i am thinking TPS OR CDI.ps this rmz runs great starts great just pops and idles poor.

[thmike]

decel back fire is from the pilot being lean or the air fuel screw. that woul also make it idle wierd.. what is your fuel screw at?

[vet101 racing]

I've checked the pilot and went to a 42. The main is a 172. The fuel screw is set to three turns out. Also, I live at a higher elevation, about 4700 feet, so I wasn't completely sure about what to go with.