[6pack] Engine rear seal

[Douglas Morris]

I'm probably the only one who's ever had a leaky rear seal.
Loses a quart about every 700-900 mi.
I know I can live with it; but it's the only place that still leaks, so it's
the long-pole in the tent, now.

Is there a trick to fixing that puppy (other than a straight R&R done right,
after which it should only leak a quart per oil-change interval)?

Doug Morris, NC, '74 TR-6