Don't know how to fix the links, Hootenanny. I'm supposing you're in Europe or on those little Brexit islands offshore, and the videos may be blocked where you live. The links work here in California.

Does this Fred Holstein link work better for you? https://www.youtube.com/watch?v=YHZD35tiy5o

And another Don Lange link: https://www.youtube.com/watch?v=L_C-RZL2oXo

-Joe-