Thanks again everyone for the input. Leaning back towards keeping my stock diff instead of exchanging for the $750 core refund. Will make the swap back to stock that much easier and also easier to sell the 4.10 setup if I can ship it. In any case, my freshly rebuilt diff with 4.10 gears is complete and in transit from Diffsonline to Portland. Will likely have the swap done in about a week or so!!!