Aarons bike repair is the best C&V resource in Seattle, often recommended by other bike shops across the country, including Harris cycle, as an expert in IGH. Chances are they will have those impossible to find odds and ends in stock, and has has a cotter press and other C&V tools that most other shops don't have anymore.
Aaron's Bicycle Repair, Inc.
Recycled cycles is another good resource with inexpensive used parts, the Boat St. being the better of the two. My only negitive about them is a mechanic at the Freemont shop told me "cottered cranks are inherently flawed and unsafe, so we always scrap them", yet found a really nice Solida cottered crankset at their Boat St. shop??
Their C&V collection of bikes hanging from the ceiling is amazing.
Recycled Cycles
Angle lake cycles can be another good C&V resource, but be forewarned, they have been in business for over 50 years and have never thrown a thing out, its virtually impossible to walk through the shop for the piles of bike parts.
http://www.anglelakecycle.com/