Thought it was leaky pan but now...

I'm sure this won't make you feel any better now, but they make a seal removal tool that takes the seal out without even having to drop the pan, and a driver tool to seat in a new one.
The internal seal around the TP rod is a little tougher with it all together, but not too bad.

KD tools #2392 $25.00 with free shipping on ebay.