wiggle of the starting line.

If you are running a stock style seat and the launch plants you back in the seat you are going to move the steering wheel.

That is defensively a "thing". when i was only running high 15 in the 1/4 i broke my seat back and had a old racing helmet behind the front seat keep it from being a recliner :lol:
Had to strip my seat completely and have my buddy weld it all back together. Yes i'm still racing in that seat.