Looking for some assistance if possible. Have a 1994 Suzuki DT/DF 225 EFI. Having an issue when I get above 3000 RPM's - problem intensifies as I provide more throttle via hot foot. The engine seems like it is missing and speed does not coincide with RPM's. Had a previous issue where dealership put in wrong plugs but that was rectified. Also the REV Limit light flashes slowly and dimly priot to WOT of 5500. I am told by a friend that the cause could be the throttle position sensor. I will also tell you that after one time out I checked all the plugs - I had three plugs that werent very charred. Any assistance would be greatly appreciated. thanks