Cool, I get to answer my own post! Two photos attached - 1324 is from my friend Doug Jones and it shows the spring installed on his '29. That was the secret I was looking for. Photo 0259 shows the spring installed on my '29. I bought the spring from Kent Thompson for $15. It would be more than that in frustration for me to try to make one.
New question for the community. I've seen the rear brake actuating rod installed in both of the holes in the foot pedal on different bikes. Is there a preferred location?
John