i would leave it as you have it, run it check the plugs. but with letting the engine breathe i would bet you have to go up. your at 140 mains now, order some 142 and 144 mains. i think steve ended up running his all the way to like 150 mains. i am in the same spot except i have left the stock air box with a bunch of holes and a free flowing exhaust and i hit a wall where it stutters at 70 mph.
mains jets from bing are like 5 something a piece so it nots going to break the bank.