Yes, repete, you're right, those screws loosening is a problem, I've actually managed to get nuts on the 4 screws holding the center diff brace to the chassis, using longer screws, and curved needle-nose pliers. I did this after a couple of stripped holes on the chassis. I ended up doing this to all 4, no more loose screws or broken mounts for me! Its a little tedious, but seems to be worth the time, considering how many times those screws loosened up before.