[Kube]

Zoe,
I'm thinking there's a charging issue / short somewhere in your circuit(s).
For a comparative test, I just took out my '36 roadster - 100% STOCK. It is 86° here currently. I ran it to the grocery store, 7.8 miles from here. Parked, bought a few items, got back in, started up immediately and drove home. (hmmm.. no vapor lock, no electric fuel pump and 10% ethanol fuel).I guess I must be doing something wrong...
Anyway, drove the 7.8 miles home, parked in the garage, shut it off and carried in the groceries. Went back after about five minutes, allowing the temps to rise after shutting it down.
Here's what I got, all in Fahrenheit:
Cylinder heads 126° - 137°
Intake manifold 134° -136°
Starter body 110° -116°
Carburetor 109°
Fuel pump 106°
Water pumps 135° - 141°
Generator 105°
and lastly: cut out 116° - 117°