Joined: Feb 2012
Posts: 19,362
Likes: 5,500
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
With only a single spring end hole in both parts of the pivot and no "B" screw type of feature I believe the spring tension was not meant to be adjustable. IIRC this was a near copy of the Shimano Crane top pivot which also had no adjustment designed in. Now one could drill a different spring hole, easier said than done. As to the pivot shaft rounding off one could turn out a replacement on a lathe. A bit beyond my skill level. Andy
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AndrewRStewart