I don’t know if this will help, but we’ve had success with:
White Center Glass & Upholstery
http://www.whitecenterglass.com
9443 Delridge Way Southwest
Seattle, WA 98106
(206) 762-8088
in our situation, we had a broken piece of glass in the operable section of a single hung window, so we actually took the section there, they replaced the glass, and we re-installed the operable section. if you call them, they might be able to help you figure out what to do.