It's looking like my mind was locked into an incorrect, or perhaps just different, concept of Y axis max and min. After finding a thread stating Y min was the front edge of the bed when facing the printer, I reversed the direction of the Y motor, changed the endstop from min to max and changed the homey.g and homeall.g files then, voila, the Z printed in the correct orientation. There's still a little skepticism in me after going down so many empty rabbit trails. Hopefully a few good prints will remove any remaining doubts and free my mind to tackle installing the Reprap Champion silicon bed heater that toasted my G2 board.