I don't know how many of you will believe me or not, but I finally fixed the log rpm bog on my HPD race mod. So far with only riding it around the house, I am able to really holeshot the machine now. I replaced the PWK bowl that did not have an internal overflow tube in it. This tube allows excess fuel that comes into the bowl from the vibration of the engine to "dribble" out the vent tube. This excess fuel with force its way into the engine if it can't go out the tube. I have a rich condition at idle and 1/4 throttle until I changed the bowl. Now, it is not getting too much fuel and launches much better than before. It pulls harder all the way thru because it is not having to clean itself out from the beginning. Thanks to all that gave me the advice. [img]i/expressions/face-icon-small-happy.gif[/img]