Yes, i did check the advance timing and it seemed to be okay it was in between the two notches.. When i choke it on accelatoring it does not fall on its face.. I can't understand why that carbeutor idles fineand the other carbeutor i stick on it will not idle but accelerate just fine..Could it be something to do to the fact that the one carbuetor is off an 8hp motor<br /> very confused Trail 