[Chris h]

OK, I think I have figured out how to attach an image...finally!!!

This is my experiment with using an O-ring as the driven tire on the dial drive.

[Image: https://s19.postimg.org/jsmuvqk2r/20170804_202529.jpg]

Using this method, I have not used any adhesives to attach the O-ring to the drive wheel, just the O-ring stretch to keep it in place.  As you can see, the knurled drive gear rides near the OD of the rounded O-ring surface. I am hoping that this will keep the O-ring pushed up against the dial and prevent it from coming off.  If not, will have to revert to plan "B" or "C"or...