Joined: Feb 2012
Posts: 19,381
Likes: 5,528
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
Manufacturing tolerance and/or miss labeling. But I'll add that a chainline changing by about 1.5mm shouldn't be any big deal. Unless you're already at the limit of chainstay clearances and that 1.5mm is in the wrong direction. Andy
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AndrewRStewart