CB95, I'm sorry, I didn't notice that you were from the colonial side of the pond! You'll find the vast majority of the information here refers specifically to the European/British environment, and not the US situation. You may find that you can glean more info via our North America forum, but I strongly suggest that you have a look for USA-specific sites similar to Pprune for information most relevant to your area and needs. I did have a couple of addresses, but I can't seem to find them. We're normally a bit touchy about giving trade to competitors, but in your case it may well be the best way to go.
Scroggs