Replace the chain.
A 24 year old chain will almost surely be too wide for anything more than a seven speed cassette, and more importantly will not have peened rivets.
Before hyperglide, rivets were simply pressed into an undersized hole in the plates, and retained by friction alone. That was fine until Hyperglide shifting increased the side forces and made peening the rivets necessary to prevent chain breakage. If you use this chain on a modern cassette you face a great likelihood of chain breakage, possibly causing injury or at the very least some inconvenience.
__________________
FB
Chain-L site
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Last edited by FBinNY; 06-10-09 at 11:34 AM.