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Old 03-04-14, 09:55 AM
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RoadTire 
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Bikes: '09 Trek 2.1 * '75 Sekine * 2010 Raleigh Talus 8.0 * '90 Giant Mtb * Raleigh M20 * Fuji Nevada mtb

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Are they twisting / rotating sideways or sliding down the bar? I think mine will rotate a little if I actually try, but haven't noticed any slippage. I agree you should shim them with metal or firm rubber. Failing that you might need a clamp on the bar under the Tektro clamp to keep it from slipping down.
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