After receiving lots of help--especially from Howard, G6LVB--I got the newly modified RHCP 10el cheap yagi up on the mast this morning.
Previously, using the original 10el linear antenna, I was unable to make a QSO on SO-50. I could hear stations but not well enough to work. Well, first try out of the gate on SO-50 this afternoon, I made several contacts 5x9. So it works better than I had hoped.
The really interesting part of this story is that I dont have any way to check this antenna or its matching stubs, etc. Just built them carefully, made the stubs carefully, and followed directions. I'm still working on acquiring some basic tools that will work at this frequency.
So, it is possible, with little or no extra equipment, to get the job done. This system is still running barefoot--no preamp--and no elevation control--but it works pretty well considering.
Thanks for all your help gentlemen.
Curt KU8L