Been reading on the forum that most people adjust the air/fuel screws (jets?) 2-1/2 to 3 turns out from the seat. Is there a procedure that specifies max or min vacuum to achieve the optimum setting? I can’t find anything about it in the service manual. Still trying to get my “new to me ‘04” dialed in. Bike runs fine. Trying to improve the fuel economy. But…………..I don’t want to fix it if it’s not broken.