Just got my bike back from the shop. The mechanic did a few things to my bike that make it feel completely different. First is a set of new Dunlop tires. The traction is so much different from before. Secondary, the oil injector is taken completely, the performance of the engine is very constant now. (He said he found the transly is full of 2T oil.) Third, the accelerator cable is down to only one. The accel. handle is much lighter now compare to before. He's also washed the carb. & the clean the spark-plugs for me. I am really happy that I listen to his advise and make all the above changes. Yappeee......