I have a Baja Warrior with the original 200cc engine. I recently installed a chinese torque converter and the performance is night and day. However, it seems when out on the road and after extended times (10-15 min) at full throttle (still governed) i lose acceleration and feels like the wheel isn't turning as fast as the engine still is. I upgraded my knockoff belt to a genuine comet belt and better aligned the pulleys to the tune of a much more responsive throttle but still feel like there should be more "grab" in the mid rpms. Would setting the rear spring to the 3rd hole be wise for more power offroad? Would you attribute the loss of power after time at wide open to the lesser quality belt heating and stretching?