When I rebuilt my second-hand RRO OTT system, I called them up and they gladly gave me the Moog part numbers so I could buy the parts locally. I had to cross them to other manufacturers but I got the right parts in the end.
All you have to do is be friendly. They respond well to Friendly!

Which is true for just about any vender.

BTW, although I have met owner, I don't think anyone there knows me from Adam so name recognition didn't play a part in the transaction (no matter how much I wished it did...

)
Hope this helps!