Have the latest Di2 on my new bike. I have Zipp Vukas, and should be able to shift on the horns and at the aero bar extensions. Love that feature! Well, went for a ride yesterday and the shifting works great on the horns, but NOTHING on the aero bar extensions. No Bueno. I check the 5 little plugs and they all seemed to be plugged in solid. Any ideas on what might be wrong before I bring it to the LBS?

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Lar Dog