Okay, so I've read a couple dozen threads on here about the pinion seal leaking and how this is a common problem. Well it turns out that while changing the oil the other day I noticed the same thing happening. I am 100% positive it is the seal. It is getting slung out where the flange meets the diff. My question...how the hell do you remove the 30mm nut thats on the flange? I've taken a breaker bar to the damn thing and can't seem to break it loose. I'm reluctant to take an impact to it. It looks like a hardened brass nut and don't want to gum it up with an impact. Is there a trick to this? Step by step instructions on replacing this seal would be great.