Brenner, I appreciate both you and Doug's explanation and have a better understanding of the changes Tony F had made to his Onas. So, you both can appreciate my concerns as it relates to
the right thrust built into most of the current 2m designs. I can see the benefits of the Contra Drive once I understood how it effects the flight characteristics of a given pattern plane and the additional changes one might have to make to the current designs ie, grinding/modifying the nose to remove the built-in right thrust, replacing the firewall, increasing the vertical fin area and increasing the width of trailing edge of the rudder, etc. All of which I feel I am capable of doing now that I understand. Again, I thank you both and look forward to flying with you later this year. Everette