We're not sure if Victor Veysey, proprietor of the Bike Hut at Pier 40, would go so far as to say that using and exchanging bicycle stems over and over until a customer finds one that's just right — as he allowed us to do once — counts as official store policy. But it's a good example of the no-worries, aim-to-please, keep-fussing-and-helping-and-advising-until-a-customer's-happy attitude that makes this eccentric little place on the west side of the ballpark our first stop for all things bike. Veysey is a former instructor in bicycle maintenance at City College, an institution that has become legendary over the years as the MIT of bike repair. The Hut is also run as a nonprofit, training young people from impoverished neighborhoods in bike mechanics, so shopping here is fabulous karma. Aside from the top-notch fixes, the shop offers bins and racks of used bikes, parts, and clothes, meaning a frequent visitor can outfit a pro-looking kit for about what you'd pay for a front wheel at, say, Lombardi Sports.