I am not impressed with the 9.25 rearend. I guess it's been 3 years since I had a DTT and OEM 4:10 gear installed with a Timkem Master Install kit. I had it done at a defunk Dodge dealer. Took the mechanic 4 hours start to finish to do. Ran perfect without issues. Did a little TnT and to be honest it started to have a little backlash. I don't abuse my ride, but will make a few passes and of course this means spinning the wheels. I was going to adjust the backlash this morning and got to looking at everything and the bearings have a look of running under heavy load. I use mobil 1 75-145 gear oil. Normally I would expect the bearings to have a burnished look, this are lightly scored. This includes the pinion bearing which still maintained a rotational drag of 20in/lbs. The Timken bearings should have held up better IMO. What's the best quality Master Rebuild available?