I don't know how it is around the rest of the country, but the shops from various buildings send their parts (if they are able to be carried) via feeder drivers. If a part needs to go out to an outlying center, the shop at our hub would bring it to dispatch and set it on our counter, and tell the dispatch it needs to go to so and so center. When I punch in, dispatch asks me to take that part down to the shop at that center I'm going to later. One mechanic an hour from the hub even had my cell number, he'd give me a call an hour or so before I left for his building "hey will you swing by the shop and pick up a part I need?" I never minded doing it, and the 2 buildings I went to every night would literally jump to help me if I needed something because of it. I'd always announce "Unlimited Parts Supply!" A couple of the mechanics in my own building were not so fast to help. I'd hear a lot of "that's not my assigned tractor." or "red tag it till your mechanic can get to it." I always felt like it came out of the same big brown check book.