Accessed the trans and Blackjack shifter to inspect the leakage this morning. It appears the factory Tremec seal I was instructed to cut and fit has enlarged and deformed from when it was originally fit causing it to pucker at two sides.
Here's a photo sequence of the disassembly:
http://sieg.smugmug.com/Cars/Hurst-B...2201289_T3Lcqh
My guess is without a properly engineered seal it appears it will continue to be an issue.
