Axle Retainer Nut Torque w/ Green Bearings?

Bolt torque is not the problem. I'm not familiar with the "ins and outs" of green bearings but I've heard some talk of pulling out the middle thrust button. Could that be an issue?

Hot? could be bearings, or brakes? How hot is it there? How long/ fast do you drive, and how much and how hard do you use the brakes?