I noticed that during hard braking the steering wheel shimmies back and forth. Heck the other day I actually had the truck feel like it was bouncing while I was applying the brakes coming down a big hill. Could this be warped rotors and would turning them cure the problem? I mentioned to the dealer when I bought it and they said it was possibly from sitting. LOL I think not. I mean I was not born yesterday. Any thoughts? I am having them look at it today again.