I have a set of 26 tooth Zephyr gears that I am asking $450 for. The low gear on the cluster has three chipped teeth, probably from rocking the car in mud or snow. I did have contact from someone in CA who repairs these teeth, but I lost his name and address. I don't think that chips on low gear would cause any problem, however.
If you are interested contact me at breitw6@gmail.com or 609 267 9321