I'm doing the same thing...

I just bought a new Oil Pan Gasket, and I plan on changing it out next time I do an oil change.

One other place that you can check that was creating a mess in the front of my engine (before I fixed it) was the tube and connections that go from the valve cover to the Oil Separator (a filthy black beer-can shaped plastic device in front of and slightly to the right of the air cleaner).

Another leak was the side of the transmission (mine is a 4 speed). There is a plate on the drivers side that you can see when you're under the car. It leaks if the bolts are loose...

Hope this helps you.

- Patrick

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1982 240D. 198k, Marine Blue/Blue, 4 Speed, Crank Windows, No Sunroof, No Rust, No Oil Leaks
2001 TDI. 197k, Lagoon Blue/Black, 5 speed, Chip, G60/VR6