Will, they will fill your tank. And you do not have to give it to them for a few days like some of the other shops, they fill on site while you wait. usually takes just a few min. I did not want to give up my pretty bare aluminum bottle, so that is why I went all the way down south to do it.
Ok, great! I've been going to General Air at Walnut and 38th where they do tank exchanges. I usually get nice tanks (sometimes bare aluminum with little to no wear), but they go in my under-tank cabinet, so I didn't really care as long as they worked.
The General Air guys give me free seals for the tanks, but the cost is $20 per exchange - MUCH more expensive.
Do you use new seals with each refill (which fit inside the regulator-to-tank connection)?