Rear End Oil Leak.

What's the easiest way to prevent the rear end oil from seeping down the bolt threads?

I assume you mean the bolts around the perimeter of the center section? If so, check that they're all torqued properly (I had a few loose), then apply a generous amount of black high-temp RTV. That worked for me w/o having to take it all apart.

Yes, I am talking about the center section where it bolts to the housing. I'm also going to use a "soft" washer under the nut.