An example of the above "something terrible". I lost a tooth on the double gear while lurching around Manhattan in the Fall of 1966. This was the high bottom gear, and parts were scarce, but Ben had one, which he was willing to sell me at some outrageous price, now forgotten. So- armed with my bag of tools, Paul Richardson"s book, and a drop light I entered the steam tunnel where I stored my bike at the back of a parking garage on 82nd St. Conditions were not ideal, but the operation was a success. This was the first time I had gone into a Vincent gearbox, and I felt pretty proud of myself. Back then, there were two places that I knew of in US to get Vincent parts. Ben was one, and the other was Harry Bellville in Marysville Ohio. I didn't yet know about Gene Aucott in Philly.