My bike has been running funny lately. At about a quarter throttle the bike surges pretty bad as if the engine is running lean. These symptoms have gotten worse and worse the past few months. At first I thought it was the pilot jet and air/fuel screw settings but I'm pretty sure it is not since I have set the carbs per Eddie's specs. Currently the bike has the 3X3 mod and full Ti exhaust. I have since checked the petcock and the float level but both are functioning correctly. I then checked the tps and it seems as if its not within spec. With the throttle fully closed it measured 4600 ohms and fully open it also measured 4600 ohms. The book says it should read 78% of the closed measurement when the throttle is open. Could the tps cause these types of symptoms? What does the tps do? Please help!!!