I haven't felt any shaking or vibrations at all. The only two thing sthat I have an issue with is when slowing down or backing up real fast it tends to backfire. I believe it must be running to rich. Since it is time for my checkup, I will have them adjust it. The other is just adjusting the rear break. Thus far.....I can't get the smile off my face every time I ride it.

 

Ya they all back fire when in reverse you have to use the reverse overide switch if you have one, and for the crackling and popping when your slowing down its normal they are all doing it, it's those big twin's its just the backpressure. Personally i like it I wanna put a super trapp on it o it crackle's real loud.