Gear break-in period?

[2FastLX]

This is a story from the flip side of the coin. We installed my gears then I drove the car for a quick test run. Everything seemed fine. I let the car sit for a few minutes then I drove the car back home to my house which was 60 miles away. I took it very easy on the car, but it was a non-stop trip. After a couple weeks I noticed a vibration coming from the rear. We pulled the cover to find that one of the teeth on the ring gear was chipped at the corner. It wasn't in the mesh pattern so it was ok, but the gear had been warped. We found 2 bolts right were the tooth had chipped that were no longer at 80lbs torque. I know for a fact we went through every bolt and torqued them exactly the same. We even made three passes around the gear. The only thing I can figure is that not breaking the gear in caused it to heat up and warp, causing the two bolts to back out. Do yourself a favor and break the gears in. Drive for 10 minutes then let it cool for 20 minutes. Drive for 20 minutes and let it cool for 30 minutes. Drive for a half hour then let it cool again. If it were me I would take the rear cover off and re-torque the bolts after the 3rd cool off period. That's just me though.