Would it be possible to fill the gap by inserting a washer?
possibly, havenāt really even looked at this board for about a week.
may mess with it tonight.
I used a dremel to cut off part of the key, my motors now sit pretty flush. I havenāt been able to test them due to time, but that may change next week. Itās just a matter of rewrapping some cells and building a battery. Gotta decide which build to work on first tho 
How is the board riding?