We are lucky here in Northern Virginia to have a bunch of great LBSs. I needed a spacer for to put my old 9spd Shimano cassette on my new DT Swiss hubs. Dropped in to A-1 Cycling a the Clocktower in Herndon, and the guys there dug through there supply of spacers, tried multiple options, kept going until everything was tight and straight and then handed me my wheel and said "no charge, have a nice ride!"

This is the closest shop to my house but not necessarily the one I visit the most, so I'm not a regular by any means. Just great service by a couple of good guys. Thanks A-1!