I removed the MAS and the throttle body to inspect and clean them, with the appropriate cleaners. I found a small section of the screen in the MAS was pulled loose from the edge. I can post a picture, if needed. I would estimate 1/2" of it. Is that going to through things off. If so, what years have the same MAS so I can try to find another one.
When I removed the throttle body the butterfly valve seemed to stick in the fully closed position. It took more force to get open than I thought it should. After lots of spray, tooth brushing the edges of the butterfly and the rest of the area that it rests on when closed, it has a little resistance when closed still.
I also checked out the air bypass module. I cleaned that as much as I could with spray and twisted shop towels. As I mentioned before, this unit has a plate between it and the throttle body with small recessed Allen screws to adjust the idle speed, I have been told. They are pretty far adjusted in. Looking inside the screws go all the way across the air channel that they are threaded in. Air can get past them, because the passage is larger than the screw but it easily blocks half the passage. You'd have to back these out a ways for the air flow to change, I think.
I didn't have time to install the fuel line, as we were working on another old car. Building a wooden dash took longer than expected.
By the way, if I took a quick video of the car starting, so you could hear it, would that be helpful?