Old 02-15-15 | 12:52 PM
  #3  
unterhausen
Randomhead
 
Joined: Aug 2008
Posts: 25,930
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From: Happy Valley, Pennsylvania
bike rumor said they had problems unless both cables were hooked up. That's the only thing I saw that looked like it might be helpful How To: Update Shimano Di2 to Multishift, Customize Button Function & Change Shift Speed
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