I think you are right. The headset on mine felt smooth and worked well, so I saw no need to service it. I sold the bike a few months ago, too many bikes...
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1989 Schwinn Paramount OS
1980 Mclean/Silk Hope Sport Touring
1983 Bianchi pista
1976 Fuji Feather track
1979 raleigh track
"I've consulted my sources and I'm pretty sure your derailleur does not exist"