I replaced the diff case last week(the brake screw holes were stripped) I when to race my NT sat and I toasted a spur..later I founfd out the rear shock tower screws had backed out??? and the battery box screws....why is this its brand new and they were so hard to put the screws in I nearly stripped them?????

thread lock is your friend. used that on my old rc10gt and made loads a diff they would still back out over time but not every time out.

I had the two top side screws back out a tad once. Not sure why they would. They are extremely tight going in and out. If you have an extra cap head screw, take a dremel and cut a small slot into the threads of the screw at the end. Screw it all the way in and back out. Then put the original screw back in and it should be much easier. Some pink thread lock would be a perfect candidate for this application. It's a little less powerful than blue, just enough for some stick.