I regeared my 2007 wrangler unlimited rubicon to 5.13 last weekend. I've got a 15 mile each way commute to work. That is perfect for a break in cycle. Been driving no faster than 50 miles per hour. And everything sounds good. And feels good. I got a infrared tempature gauge and decided to monitor the temps of the pumpkins. I'm up to 175 miles on the break in and the rear is running at 135 now after my commute. The highest I saw was 170. The front hasn't been over 135 yet. But I started measuring temps in different places. The front pinion area was running 183 f with the pumpkin at 135. Could this be a sign of an over crushed crush sleeve and to much preload. The rear has consistently temps everywhere. One side of me thinks this is normal because the front hasn't had any load from pushing off the ring gear and is mostly free spinning. Therefore it hasn't broken in the bearings and races as fast as the rear will. Oil smells and looks fine. Pinion preload was set at 34 inch lbs spec is 22-35 according to yukon and 20-40 according to the service manual. So it is in spec just at the higher end. The engine and exhaust could be adding heat to it and the rear doesn't have any added heat nearby. What do I do. Should I finish the break in and hope it runs cooler by the time 500 miles oil change is done? Pull it apart now and inspect the bearings and reset the preload with a new sleeve?