You might keep the cowling off of it for initial adjustment. I did notice mine needed adjusting to get it running/transitioning smoothly. The low-end adjustment seems more sensitive, but once set, I havent' touched it.(over a year now I think).
The cowling will have to be cut out to clear the valve cover. Just a small square is all I did though. You'll see what I mean when matching the cowling to the plane. Hope this helps.