I recently got a older Raleigh Super Course Mixte. The middle chain ring is warped, as it looks like it was only held in place by two of three bolts and ridden some distance. I went to my LBS today, but they looked at me a little funny and they only had newer 5 hole chain rings in stock. Any Ideas as to where I can find a affordable 42 teeth chain ring as well as an additional screw and spacer that will be the correct size. I wasn't quite sure whether to post this in C&V or mechanics, but I hope this is alright.