thanks for all the replies.. last year i noticed the pig leaking and thought it was the yoke seal so i installed a new one (marked the pinion nut location and removed it, pulled the yoke and installed a new seal). then i noticed it was still leaking, but upon closer inspection this time, noticed around the seal it was clean and dry. only when i looked around the pinion nut is where i saw the fluid dripping. so i've marked the pinion nut again, removed it and the yoke, cleaned the splines real good, and gooped the splines with RTV and reinstalled. so far it looks dry. i will also check the breather to make sure its clear. as far as i know it wasn't overfilled, i fill the plug hole until fluid just starts to drip out, then reinstall the plug. i also have this issue with the harmonic balancer on the engine (leaks in the keyway groove out to the front of the balancer.. i guess i just have bad luck with those interfaces (or they've been sitting so long (20 years) they've accumulated rust which prohibits a good metal to metal seal).. anyways, i'm hoping the goop is the fix...