Joined: Jun 2010
Posts: 530
Likes: 3
From: Maine
Bikes: 90 Raleigh Chill MTB, 92 Trek 1200, 2004 Trek 2300, 67 Sports, 70 Sports, 71 Philips, Lotus Challenger, 74 Super Course, Univega Gran Tourismo, Nishiki Seral
I have this problem on my Super Course. After examining and thinking it over I concluded the problem was non-serated lock nuts and chromed dropouts. Thanks for posting this, it reminded me I need to fix that.