I am a 49 year old former rider in Chattanooga, TN. In my youth, I was an active rider, including one ride from Montreal to Mobile and one from DC to Mobile. Let riding slip away over the years, but my son gave me back my old bike, which coupled with aging knees is getting me interested in riding again. Trying to figure out all the new tech, and get my old Campy SR tech back together on a road worthy bike. Thanks for answers to my questions as I try and remember how to be a bike mechanic.