This is my first post on TT and also my first few weeks with a 450F. I came off of a YZ125 to this bike and man, what a difference! I am very knowledgeable about two strokes, but have a few questions about the thumpers. My bike has the stock headpipe and the rest is a FMF Ti4. The bike has been rejetted with the FMF supplied jet kit, and the bike runs like nobody's business, but is really hard to start and likes to stall pretty easily off idle. The idle speed seems right, but the bike is really hard to cold start even with the choke on. I am not touching the throttle at all, so I don't think it is flooding. I have even tried just a little blip of the throttle before starting to allow the accelerator pump to put fuel in the carb. Any help that you guys can give me would be really appreciated. I think it might be running a little rich, but am not sure. Thanks!