This is for anyone having the notorious studder around 5k rpm to 3k rpm. After hours and hours of diagnosis and troubleshooting i found the solution to my problem hopfully it helps my fellow kawi riders and saves a trip to the stealership. Where they will say you cannot adjust your tps (total bs). They just wanna replace your $1300 throttle bodies and call it a day. Any way i purchased a wrecked bike and rebuiltit to have a 07 zx6r for under 2gs. I rode it for about a week and got fed up with the crappy throttle and parked it.. finally i said screw it.. i adjusted the valves took it to the dyno and had it tuned. Still the problem persisted. My buddy at the dyno said try adujustinghe tps so i called dealer after dealer looking on how to adjust the tps. All said its not possible. Even the book had no insight. So i took it upon myself to get down under the tank to see if i could figure it out.. i had my multimeter (stopped working the second i lifted the air box) . Anyway im rambling. I located the tps switch. There are two a greay one (for subthrottle) and a black one. Wich it the main. I took a t25 torx bit loosend up the switch and turned it just a smidge clockwise( towards the valves) tightened everything up and booom she runs like a champ... lastnight i went ahead and removed the sub throttle junk put in my throttle buddy. And also did the kleen air mod. I couldnt be happier. If anyone has questions let m know. I did kinda ramble.. pm me for a better walkthrough.. sorry no pics cuz i did all this without the intentions of it working to make a walkthrough..