Oil Pan and Rear main parts advice

There are grooves in the crank to lubricate the rope seal. If the lip on your new seal is on these serrations it will leak. That's why you can't retrofit a lip seal in the car. There's a one-in-a-million (ok, 1 in 25) chance that the lip will fall in a good spot. The seal needs to be set up with the engine out of the car. The catch-22 is that the engine has to be out to change the rope seal too.

Pull the engine and tweak the thrust bearing and or the seal retainer to get the lip seal properly aligned or pull the engine, yank the crank and slap in another rope/clean and soak the old one in mineral spirits to swell it back up; oh wait, trash day was yesterday?