I just put Vance and Hines true duel exhaust on my 2011 street glide. Did everything by the book. However I seem to be having a problem with the right floor board. Before the change, nothing was wrong with it, now there is vibration and some tapping expecially on the down throttle or down shifting. I checked the position of the pipes and the heat shields, seems to be enough room. Everything is tight, not sure where the problem is coming from. Can anyone make a suggestion?