 Haven't heard of this I don't think. Are your bars smaller than 1"? I put 11/4" apes on my bike but my zumo mount is too small for 11/4" so I had to put it between the risers where the bars are only 1". No problem, works great & plenty tight. 
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LIGHT ENGINEER Todd's Body Paint Team
Black 1600w/apes
aka Scooter
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