ch33kster wrote: ... and only drips when on a slight slope.
Park on a slope in the opposite direction!
Seriously, fixing either leak involves dropping the tranny. Not a trivial job, and a precursor to "project creep" if there ever was one. "Might as well replace the clutch while I'm here ..." So if that's the only problem, a fresh piece of cardboard every once in a while is the best cure.
Also be advised that many instances of rear main seal leaks cannot be fixed without major engine rebuilding, to include a new crankshaft. What happens is that POs ignore early drips, and the metal spring on the seal eventually wears thru the rubber, scoring the rearmost crankshaft journal. A new seal won't help, as there's a groove worn into the crank providing an exit for the oil. Some popular American V8 engines have aftermarket sleeves available which can be shrunk over a (re-machined) crankshaft, but alas, we have no such cure for our beloved TC's. A Top Tip for those of you thinking about a bottom-end rebuild now that Winter's here; check that journal before spending $$$$'s on machine shop services. You may end up, like me, with a great new (but leaking) motor.