Anyone here ever played with one of these. I found one super cheap today and it looked ripe for a conversion. Butted steel tubes, bolt-on cable guides and derailure hanger, cool look. When I got home I realized that it uses a quill-like seat tube. I also read about the weird lugs on sheldon's site. I'm thinking I might be able to cut a small slit in the back of the seat tube and use a regular clamp.