Wilsons Sandbox

Help! I have a TB type tachometer-gear box. Unfortunately a recent accident has caused me to lose the tiny screw/bolt which connects the generator end of the tacho shaft to the little 'key' which keys into the shaft of the generator. It is easy to get hold of the screws for the modern replacement 'TC' tacho but unfortunately these are just fractionally too big to fit the TB tacho. I guess I am looking for someone who knows what I am talking about and remembers squirrelling these away against some future need (me?) or who can give me the name of a general supplier of such small items I could contact. Many thanks in anticipation. Mike Marjot TB 0450 [Non-text portions of this message have been removed]