Need a part for Tic-Toc-Tac

My '68 Coronet R/T has the original Tic-Toc-Tac and both the clock and tach still work, however recently the little gear for setting the hands on the clock cracked, and the shaft came out. I took the clock to an instrument shop here in town, but they can't find the replacement gear. Does anyone know where I can purchase one of these small gears?

i will check around in the shop tommorrow and see if I can find a junk tach that I had and see if it will do you any good, maybe we can rob parts from it.

Try these guys http://www.pic-design.com/Images/pdfcat/section_12.pdf

The shop located a gear and they hope to have the clock fixed tomorrow afternoon.