I've been riding since the early 70's and have raced, toured a bit and worked in a few shops too
I agree Two Wheel Transit is a very good shop but is limited to "Trek Products" , here are some other good/excellent options, Steve Loveland who started "2 Wheel" has opened a small shop in Browne's addition on Cannon between 2nd and Pacific (Steve's on Cannon), I've bought 6 bikes form him including a custom made "Seven", Fitness Fanatics has a great resource in Jim Brittain who used to build custom bikes, had his own shop for years and has raced and toured extensively since the sixties, Argonne Cycle in Millwood a good source with good prices and Wheel Sport on Division has a very good knowledgable mechanic in "Mic"