Joined: Feb 2012
Posts: 19,344
Likes: 5,461
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
At the shops I've been in we would just grind down the wrench flats "mushroomed" bits. I've also done this to reduce the thickness to fit unusually narrow cone flats. Andy. (who wouldn't pick a file to use on a cone wrench)
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AndrewRStewart