It isn't too bad to warrant much concern but it seems to be getting worse, maybe it is in my head, but recently i've noticed that between idle and 1100 rpm there is a slight intermittent stumble/miss. Maybe not a miss so much as a lope but it is definately noticeable. It occurs when I rev it up out of gear, kind of like a high idle, and becomes unnoticeable after about 1100 rpm. I wouldn't think it is in a single cylinder because it isn't consistent. Also, I used to run power service but haven't lately, been meaning to run another through to see if it helps but I thought i would just ask on here first.