I heard about cyclopedia for bike tune ups and repairs from a bunch of coworkers and friends. They all said the same thing, that he does a great job and the cheapest place around.
I have to agree with them. He has a tiny garage in the China Town area and by far offers the cheapest rates I've been able to find. He did a great job repairing an old bike of mine for about half of what a typical shop would charge.