My 13 year old son is restoring a Yamamoto trainer that he bought at Headcorn model air show a few weeks ago for £5. It's balsa not f/g and came with an OS FP40 engine. After freeing the carb which was glued up with 20 year old fuel, the engine runs really well. The fuselage is missing the nose cone / engine cowling which the plane originally had and my son hopes to 3D print one at school. (The plane would fly without but my son would like to put the plane back to original if poss.) Problem is that we don't have the plans or a good photo reference for the engine cowling. Unfortunately I can't upload a pic of the plane as the website won't let me (Mac / PC issue?) but it's detachable and has four screw fixings holding it on. If anyome has any visual references thay could supply that would be much appreciated. Many thanks.