I will apologize for the vagueness of this question in advance, but I am curious if anyone can tell me if there may be a generic cause for a little gurgle-burp fart in the midrange of my 05 crf450r. Low-end grunt and snap is good, and upper midrange and high-end rip. Starts good and idles fine. I've had pretty much everything else apart on this bike to work on the valves, decomp system, clutch, etc., but have yet to tear into the carb of this new-to-me bike. It has a Yosh pipe and Delkevic header. Thanks so much, Guys!