Axle Retainer Nut Torque w/ Green Bearings?

I installed an 8 3/4 recenty and I've finally got the car on the road with a 3.91 clutch type suregrip which was professionally inspected and I'm told it looked really clean and totally functional. The suregrip is working great going straight and on turns. The issue is that I'm getting a slight "whinning" or "whirring" noise when I'm at lower throttle and the wheels and axle housing are very hot to the touch after a drive. Not hot enough to burn a bare hand but hot enough to be uncomfortable.

I'm trying to troubleshoot the issues and I'm wondering if the axle retainer nuts could be overtorqued, my manual says 35 ft/lb stock but I'm sure I put them on to more like 50 ft/lb and that numbers for stock bearings anyhow. I need to pick up a torque wrench and verify. Does anyone know if 35 ft/lb is okay with sealed green bearings?

Oh, and the gear oil should be full. I will verify as well but put 2 qts and it was right at the fill hole when level.