Not sure what is wrong with it. An 06 Katana 750. Has a whopping 316 miles on her and is running rough. I am going to replace the plugs, but my problem is the throttle control. It hangs up and I cannot set it accurately. The throttle is not crisp, it lags as you increase it and hangs up when you let go of the grip. I dont know what to do. Juli was very frustrated this morning and we came home because it kept dieing on her. Any help is appreciated!