I am interested in installing the Specialized auxiliary brake levers on my road bikes, because I have found that I really miss my "suicide levers", especially on crowded bike trails where I need to guard the brakes at all times, so the top of the handlebar position becomes unsafe without the levers. I asked Specialized what it takes to install the levers and they said it involves cutting the cable housing and installing the new levers. It is not clear to me whether I would have to remove the existing handlbar hardware, including STI levers, but it appears not. I might have to rewrap the bars, too, but what really concerns me is the degree of difficulty in the installation. How much tolerance is involved? Specialized suggested I go to a bike shop for the installation, but I am not sure how familiar most of those shops would be. Any thoughts?