Before gluing on the firewall, I needed to decide on the engine. At first I was going to use a PAW .03 diesel, but for various reasons I've decided to go with a Cox TD .049 on a tank mount. I can start off simple and then add a throttle sleeve later if I feel the need. Note the offset of the blind nuts to accommodate the right thrust, putting the thrust washer on the aircraft center-line. Don't forget the triangle stock between the fuselage sides and firewall.