'72 6 cyl carb/vacuum advance solenoid question

[grancuda]

I have been tuning on my '72 making it run really smooth. I replaced the cap, rotor, wires, plugs, points, condenser, fuel filters and rebuilt the carb, a mono jet. The truck is all stock and when I got it a year ago it had only 62,000 on it and now it has 87,000. Question is, I had a vacuum leak and it ended up being the solenoid on the carb that provides vacuum to the vacuum advance. I bypassed the solenoid and connected the vacuum advance directly to the carb and it seems to run fine now. Also, I hooked a vacuum pump/gauge to the vacuum line on the air cleaner that goes to the base then to the cod air door and it wouldn't pull any vacuum so I disconnected it and plugged the port at the base of the carb. It now revs very good and is a lot more responsive and has a lot smoother idle. Does anyone know what the solenoid is called to get another one or is it even needed? Also should I try and get the cold air damper working on the air cleaner/are the parts even avaliable?