. . . I think I may like my rotating grip shifters on my Trek hybrid better than I do the brake-lever shifters on my Felt. That said, (and I'm not 100% commited to this yet), I would like to explore the possibility of converting the Felt to rotating grip shifters. Is this possible on a 27-speed road bike? I may even consider switching to a straighter handle-bar similar to the Trek 730 in order to facilitate this conversion. I know it sounds a bit nuts but the two positions I currently have on my Trek just work for me. (aero-bar and on the grips), while those on the Felt don't seem as comfortable for some of the longer rides I am making now. In addition, the grip shifters are always spot on when shifting while the brake shifters sometimes jump up and down on the rear and I frequently drop the chain either off the top or the bottom ring on the Felt. Anyone out there with enough knowledge to advise on how to or even pros & cons on this tought?