Need a little help. Just got a street legal xr 100 and it runs a bit rough. It has a White Bros T4 pipe and header on it. I puled the carb apart and I believe it still has the stock jetting, a 35 pilot and a 98 main. I live in SoCal and ride between 0 - 4500 ft altitude. Any suggestions about the proper jets and settings would be greatly appreciated. I was also wondering about doing some air box mods.