I think I've found the spot. What do I do about it now? For future reference, how do you decode the head badge number for build date? If I were to upgrade to brake shifters, would it be very difficult to adjust indexing? I'm fairly mechanically inclined, but I'm new to this. After I changed tires, I was able to readjust everything back to right. Should it be that easy? I know some think it's crazy to put even a dollar into this bike, but it really is in super shape. It seems whoever owned it before liked the idea of riding more than the actual riding. It looks like it had about 5 miles or less on it, then occupied space in a garage.
By the way,
Thanks for all your help.