Idlers seem to be running good. I emailed zzp about this and sent them the video and i got a reply of " its a misfire." I guess i dont see how this could be a misfire cause if you take the s/c belt off it runs smooth as can be. And when it is idling the s/c belt is the only one that does this. I just finished rebuilding the snout today and that didnt help any. Any other ideas?