Motophoto,
I stumbled on website for a bike shop in our "metro-area" -Acme bicycles. It appears that they may be a resorce for keeping you schwinn alive. I have no problem finding bicycles @ garage sales & thrift stores. Much to my wife's chgrin I went through a stage of buying up mid grade bicycles to make shure I would have extra 27" wheels. I would assume your area in Johnson County would be prime shopping @ garage sales for bicycles.