Has anyone installed the Harley adjustable back rest on their Tri Glide? According to the parts catalogue there is a back rest and compatible mounting hardware for the Tri Glide. What concerns me is this; I have a 2006 Ultra with the adjustable backrest and the adjustment lever is mounted behind the engine on the frame, exactly where the heat deflectors are mounted on the Tri Glide. Does one of the deflectors have to be removed or altered, in order to install the backrest adjustment mechanism on the trike??