Oh, you swapped them side to side, not with another set. I cant remember if leaving the tube off causes a lean condition. If you swapped carbs & plug wires side to side i' d lean towards mechanical, maybe inspect reeds next easiest. Tho 105 is pretty low everything would have to he spot on for that to run well i'd think, i assume you didnt do comp. Check when you got it? Sent from my SM-A505U using Tapatalk