I remember my heater not working on my first car a '60 Ventura and I was cold. I took it to a garage and they wanted $25 to pull the heater core out and look at it. Out of my budget back then. So I took the car home, got dressed for the cold weather and got on the floor to see what I could see. A loose vacuum line (?) so I took the end and put it on where I thought it would go, and PRESTO I had heat. I was a "happy camper" to say the least.
I had my "outside time" yesterday and raked up some more leaves. Those Pin Oaks don't know when to quit. Today I was outside on the deck spraying final coats on a model that I've been working on.