We would prefer that your thanks be sent via private message, not by posting in the thread.
To those who offered guidance, alarge in particular, please accept my sincere thanks.
Based on our discussion I re-downloaded the spreadsheet (same version I had been using). After bringing it up to date the problems/questions I had disappeared. The spreadsheet made it clear that agility was the optimum route, and I have followed suit with re-gemming and new chants.
I'm guessing there was a problem with the initial dl or, more likely, I inadvertently changed a default setting that skewed the formulas.