Update.
The 2nd Nav/Com not working was that the KI-209 instrument wasn't plugged in.
The mechanic had unplugged it to get to something else and forgot to re-attach it. So that's kinda good, out of all the avionics squawks I had, actually most have gone away. Still have no vacuum pressure and the A/P is not working, but I think those two are interconnected. Hopefully we find a simple solution to that problem.
Right now cabin sealing is progress and we have wing root kit replaced. Floor is probably also going to get replaced - just too many holes and dings. There were some leaks around emergency exit (not seated properly after they took interior out) and the door. M doesn't think it needs new seals, just a little re-shaping so it seats better. M also found a pretty bad leak in a bleed air seal coming into cabin, so that didn't help.
Plane won't make fly-in, but I might.
