Problem with the seat

[BrianW]

Hey everyone! When driving fast around corners, I feel a small shift in the seat bottom. I know I can just get down and tighten everything I can see, but has anyone else had this problem, and if so, how was it fixed? I want to have the dealer fix this, but if a part needs to be replaced, I'd like to know what it is so that I don't simply have to keep tightening everything every few months or so.

Thanks!