I knew what you were talking about. Isn't that TCS added to the top of the TVS on some cars? I'm pretty sure I've seen that setup with the electrical plug on top of the vacuum tree.
There's a younger guy named Rob "GoldBoattail455" on the board who has been into big Buicks for many years now and lives only about 45 mins from you according to your/his location. Maybe check in with him and see if you can swing by and see if he has any suggestions? Just a thought. The power should be there.. http://www.youtube.com/user/greengiant2#p/u/6/PQgIHSTzdLM
Hmm.......I'll have to fire him a pm. The thermal vaccum port and vaccum advance made no difference. That's ok, I didn't really expect them to. Like I said, something is missing when I push the skinny down. Not sure if it's a carb or timing issue now, but those are the two places where I lay my bet on.
