Bullet proofing everything even if I drive an xray I still take out button screws and replace with cap heads and use sink screws with sink washers to renforce impact zone etc.
Last but not least am very fussy in particular with the throttle and steering horns everything has to be bang dead 90 degrees to everything from brake leaver to brake pads being shimmed to 0.5 fornt and back etc everything dialed down to caliper measurements sad but true it comes as second nature when you fly rc helicopters your tend to be very meticulous with the other rc stuff.
Anal enough for ya I hope....