AviationNut, from the pictures, it looks like you did a real nice job building and finishing your Fun 51. I'm sure it will fly fine, I've seen a couple and they're all over the sky. Guys who have them, have lots of fun. I do worry about that thin fuselage though. The landing gear mount is questionable, engine mount is no more than adequate. I have a hunch the plane would fly just fine with a strong 40 rather than a heavier .46 or .51. I gues what I'm thinking is that a good strong .36 or good .40 gives the builder the ability to choose a smaller tank as well require less tail weight. But enough of my aeronautical dribble. You have a great looking plane and the other guys who posted also demonstrate great building and finishing prowess. Thanks for sharing.