Thanks, I'll check them again. I did check after I'd run between 1/2 gallon and 1 gallon thru it, and they were just a little loose. Might have broken in a little further; will check them again. My biggest problem has been with the carb barrel retaining screw; the original wore and allowed a bunch (like 1/16")of play; put a screw from my RC car supply in, and it wore too, probably because it was just mild steel. I've got the Saito screw set on order; not sure what I'm doing wrong there...