Joined: Jun 2013
Posts: 4,094
Likes: 1
From: Bozeman
Bikes: 199? Landshark Roadshark, 198? Mondonico Diamond, 1987 Panasonic DX-5000, 1987 Bianchi Limited, Univega... Chrome..., 1989 Schwinn Woodlands, Motobecane USA Record, Raleigh Tokul 2
Considering the mechanism, I'd try to find a replacement sprint behind the "ball."
Alternatively, increase the depth of the "divots" would counteract the effect of the ramps wearing.