I spent about an hour on the vacuum lines and found a couple of disconnected lines. It's running better now, but still stumbles on partial throttle off idle. Yesterday, I cleaned the carb, blew out quite a bit of gunk & crud. I wonder if some of the jets are still gunked up. Maybe tomorrow.
I'm also going to fight some dash wiring headaches, but haven't even really started working on that part yet. I've read a handful of information about the tach, sounds like it's pretty much useless if it's broken. I'm not giving up on it yet, though. Everything else on the dash is questionable, so I'm hoping it is simply loose wires, bad grounds, etc.
Tried adding some additional pictures, but it failed . . . please hold.