a 2006 400 TRV ... after 600km I decided to check my plug as the bike's exhaust was smellling somewhat rich and a bit smokey. It was a bit blacker then I expected and had deposits on the tip. So while I'm in here I might as well check the air/fuel screw. Does anyone know the stock setting for it? As well how is the pilot screw adjusted on this carb, there's only one air/fuel adjustment screw on the outside of the carb?