When I tried to purchase metal valve stems, Dill advised me that Discount Tire sold them. However, the nearest DT is 40 miles away, so I visited some other "brand name" tire stores. Most looked like the workers came out of the coal mine, and the shops were dirty. I get it, tires are dirty.
Eventually, I drove the 40 miles to Discount Tire, and OMG! what a difference. The place was clean, the employees friendly and articulate, wearing nice uniforms.
The first DT I called didn't have them in stock, but he offered to stop by the next DT on his way home, pick them up and mail them to me!
I can't believe a city my size doesn't have a DT.