I just read David is a Buchanan but not Asa's son...Bo's. How is that even possible? I know that Rex was Bo but than shouldn't that make David much younger than he appears to be? He and Bo really look more like brothers than father and son. I think that is pushing it just a little. But Tuc is an amazing actor and so is Bob. Maybe Rex will tell them that Bo not Asa was with David's mom. I bet that is the reason David leaves town. I guess they really changed history!