Ok last question I swear. For you Carpet knife drivers. I notices a big taco like tweak at the back of the chassis. After fiddling around with a few things I notice when I started to tighted one side of the Football it sprung up on the other side. IF I tightend down the other side.......TACO time. The kit comes with some crude nuts that are obviously not flat on the top.

I was thinking about backing the screws down then taking the high spots off with a file or maybe using some washers.

Anyone have any hints?