Thanks to everyone that replied. Lots of interesting and good ideas. Never heard about the explosive vapor method before: I'm tempted to try it, just for kicks,
The gas station air supply that I plan to use has a huge compressor and tank. It's located in a preserved historical garage located in the national park.that I bicycle in every morning. The ancient gas pumps no longer function, but the old style air source has been maintained and everyone in the area uses it. I have to keep the stem valve in because it is what pushes on the valve in the chuck that releases the air. Is there some way to get around that without changing the air chuck?
A local indie mechanic will balance a tire if it is off the car for $5.00. I'm not really trying to save money; I just like to do things myself if at all possible, and I have really come to hate the tire buying experience in a tire store. About the only thing on a car that I've never serviced before is the tires, so it will be a new adventure. If I fail, either the indie wiil finish the job for another $5.00, or I will buy a can of ether.