[wonderwrench]

Thanks guys and Brian that is a great guide. One thing that gave me trouble was trying to reinstall the dial drive assembly. The two aluminum sleeves that ride on either side of the hoop are spring loaded and must be held apart to allow the dial drive to be installed without possible damage to the hoop or drive assembly. I did this by prying the two sleeves apart with my fingernail then placing a small plastic shim between the two sleeves. Once installed I removed the shim.

Now the bad news, it's still rough. I did not stretch the spring. The roughness is in the dial drive assembly not the drive system. When I had the drive assembly apart I cleaned it completely. I used grease made to lube screw drive garage door openers. The balls do not seem to be flat spotted. The outer bearing race looks fine also. Looking at the inner race AKA vernier shaft it was slightly rough looking where the balls ride. I used some very fine sand paper to polish this area. I folded the sand paper over the inner race the twisted the shaft. Once done the race looked much better.

If not enough spring tension can cause the vernier shaft to slip will too much tension cause roughness? If so how can I lessen the tension without the possibility of damaging the spring?