OK, like chiolas in the link above, given by Guru, my pedal finally calibrated from 0 at the heel to 255 at the toe....the only thing I did differently than before is tap the C switch once more before slowly bringing the pedal back to the heel position. Crazy, but it registered 0 as I went the full throw several times to make sure it was done. I saved it with the D switch, a P appeared, I powered the unit off and on, and all seems to be in order.
Thank you all for your comments.
Ian Cone