About 9 years ago I completely rebuilt my 88 250 motor. I bought a Q pipe and a keihin 39 PWK carb. After all that life happened and it sat. I have recently got everything together and ready to go. I have a few questions. First, Do i need a new intake boot or is there a way to modify the one I have to work? This carb just will not fit. Next, Where do I start with jetting? I am basically at sea level, Q pipe basically stock cylinder. I know these are probably dumb questions but all my searches are for tuning the carb to a 500r. Thanks for all your help in advance. I am very excited to get this together now that my kids are at riding age now. Im sure as I build this quad up I will have many more questions.