Maybe helpful
Not sure if this has been brought up lately, but I was having issues with my right rear bulk head having poorly threaded holes. The bulk head was stripped on one hole and on the bottom side as well. I actually had a screw back out during a race and fall out (which I check before each run). So I changed my M3X14 to M3X16 for a little more bite when holding on the A arms. For the chassis underneath to the bulk head I used M3X8 instead of the M3X5, but some 8's didnt fit, because of inconsistant depths of the treaded holes.