Yeah, I also thought the actor they used for Blue Duck in the movie wasn't quite right for the part...

Someone should do a fully fleshed out movie version of the Louis L'Amour story, "Jubal Sackett". It would make one hell of a good movie if they did it right. The guy who played David Crocket in the recent Alamo film would be great for the part of Jubal Sackett in his middle to later years...