Mobyal, Tell us a bit about your Waco.....I almost ordered a 1/5 , but heard about the 1/4 Cub from Hangar 9, so it is on it's way. Have three bipes now, and like each one for it's own way of flying. My GP Super Stearman is a great plane, with a Zenoah 26. The Camel is a good WWI airplane, with a Saito .91, and then I have an Aeromaster II with a .61 for bangin' around.....