My mods include Stage IV 2 into 1 carb 33mm Keihin PWK, Timing at +4, Dyno Port 2 into 1 exhaust, Twin Air filter with airbox at about 1500ft above sea level. I just started getting good at my Mikuni's and now switched to a Keihin. I don't have this set up on the quad yet but when I install I want to have a couple of jets handy to get me started. What is a good starting point for my set up? Pilot and mains sizes? The carb currently has a 48 pilot and 160 main. Any help is appreciated. Thanks Dominic