I have an annoying oil leak which I think is the front (flywheel side) main
seal.  When the transmission was rebuilt I asked the shop to replace the
seal while the transmission was out.  They said it wasn't the problem and
that I had something else going on there.  After I got tired of it spotting
up the back of the car and "marking it's territory" I took it to another
shop and had the seal/o-ring replaced.  Still leaks/drips, but not nearly as
bad.

My question is, is it likely that the case halves are seeping.  Is that
something that can/does happen?  Can there be something else going on?  Or
am I just being taking as a sucker?

The car is a young 91 tin top, WBX, Auto transmission, 253K miles, good oil
pressure and good lube oil analysis report.

Thanks, BobC