Franco, yeah, I sent you a personal msg about the high-side fitting location.
Hope you got it, didn't want you to think I forgot you.

Seems like the time to do a vacuum check. I have a feeling you'll not hold vacuum well. Next step would be to get a can of 134 with UV dye in it, and shoot it into the system and see what creeps out.
I'm doing just such a test on my other car right now. You can get a little UV flashlight on ebay for under $10, works good.

DG