'71 rochester idle problem

I'd say time to clean it, and it may have a foam float that is sinking, and or dirt in the needle/ seat, or needle worn/ damaged.

Many guys try to blame fuel dripping from the throttle shaft as worn shaft/ bore, but the fact is, fuel should not leak even IF worn, as vacuum should draw it in. This is an indication of too much fuel, dripping into the throat due to high float level.

Heck, this time of year in Kansas, you should not even NEED a choke.