hogflyer, would you really still put those planes in the air?? I'm not trying to give you a hard time, I'm truly curious because I have a plane that is at least 30yrs or older, scratch built by my Dad. It's a 1/2A Reno Racer type plane. He told me not to try to fly it because it was too old & that by now the wood would be too crisp, & it might fail. I'm not really sure I understood what he meant by "too crisp" do you know?