As many of you know... our R's seem to develop more than thier fair share of squeaks, rattles and other undesireable noises. In my case, the passenger side seat squeaks, particularly on a bumpy highway. Any brilliant ideas of what I could do or ask the dealership to do? It seems to be the seatback moving back and forth, as opposed to the base, which you could theoretically tighten pretty easily. Thanks.