I'm still trying to get the Edfelbrock dialed in on my bike. I have a 2002 XR650R with White Bros header, "E" series pipe with 12 discs, modified airbox side panel, smog block off, UNI filter, and the two pieces inside the airbox have been removed. For some reason my bike likes the #21 needle for mid-top end but I can't get the lower end dialed in. The bottom end feels sluggish but then I lean out the accelerator pump which improves the bottom end but then it bogs. I know it's just me but I do notice the increased power with this carb. I just want to get it right so I don't waste my riding time taking the tank off to get to the needle adjustment. Anybody here successfully run the #21 needle or higher?