Paint marks, Loctite products and constant inspection are your friends! When I raced, I went over every fastener and critical item before every race. Paint marks around the nut to show shifting and then a line to determine loosening. Stuff falling off at a combined 140 mph and 1.2 G's braking can just ruin your weekend. I still do it on my track car because I want to be able to drive home. OCD is a good condition to have for sports like ours.