I’m calling this done. Thanks to everyone who read and commented on this thread. I appreciate the encouragement and support
of RPF members. Many challenges were here. I learned some new things-& tried a few techniques I'd never done before,
which is the best way to improve. There were many sessions of head scratching, and several trashed "first attempts".
I followed some of the techniques offered by the excellent scratch builders on this forum.
And the calculations and problem solving involved may keep the old bean from becoming atrophied.
Thanks for following...