I have the same problem. I have had the same problem since day one after leaving the dealership. They thought it was normal. However, I have spoke to others, and it is definitely not normal for a Kawasaki or any other bike for that matter. First off, this is a digitally fuel injected bike with electronically controlled throttle bodies. There should be no way this type of problem could show up with this type of fuel metering system, if everything else has been set up correctly. It could be a number of different issues related to combustion. Spark, intake, fuel, timing. All could be culprits. I took my bike into the dealership because after the first service my gas economy dropped from 60 mpg down to 36 mpg. I suspect that there is something wrong in one of these areas. My dealer has good mechanics. I am sure they will find the problem. I just hope it is soon, because I miss my ride!