Did that man. everything is copper sprayed. I had some other people look at it and they think the same thing as me. If it had a vacuum leak it should not idle right at all. but if you leave the car sit it idles fine. No surges anything. sits at a constant 800 or so RPMs.
Yeah man, I threw the book at it. Something should have changed. I would say the slave TB plate isn't closing fully or is getting caught up, or you have an intake leak somewhere. I would copper spray all your gaskets.