Found the transmission bell housing was coated with grime. Guessing an input shaft seal leak? Will have to replace it. As long as things are apart, I'll also drain the gear oil and replace the output shaft seals -- although they were not leaking, Hans is over 20 years old!
Clutch/flywheel cover was also pretty grimy but otherwise in good shape.
Removed the cover and found the clutch was well worn down to the rivets. The flywheel was in good condition but I sent it out to the local machine shop for cleaning and resurfacing. Looks like it needs it. As others have recommended, I used a spare piece of steel bar to hold the flywheel to the engine case while removing the bolts which were VERY tight. Had seen a lot of warnings about the weight of the flywheel but it really wasn't that bad. I supported it with one hand while unscrewing the last bolt and then pulled it off.
IMS and RMS seals look like they were holding up well. Doesn't look like any significant leaking from this side of the flywheel...
