Good news bad news.
Good news: I put on the new TT bike aerobar extensions and cut them to the proper length. My wrists are already thanking me.
Bad news: frayed the stupid shifter cables for both shifters, so now I can't get it through the internal routing and have to replace it. Which I, of course, don't have, so I have to order it or go to the LBS. Plus, carbon dust everywhere.