First Mistake... I wanted to use some handlebars and a stem I had so I bought a 1" to 1 1/8 Inch Quill Stem Adaptor, come to find out Trek switched from a 1" to a 1 1/8 threaded in 91'... I have a 95'. I want to use the fork on the bike but want the flexibility of using a modern Stem. How can I do this? I can't find a 1 1/8 inch Quill Stem adaptor/extension. Can a shim be used?