Got my BCE 8T 2.0 chassis today. One question about the motor mount recessed holes. When I use the stock screws and the countersunk washers, the screw heads stick out a bit beyond the bottom of the chassis. Looks like it could hang up on the screw heads when landing. Anybody have this problem?

Also, I noticed that the chassis came with 4 washers. Any idea what the washers are for?