Thanks, I figured they attached somehow to the wing bolts. The builld is coming along. Mounting the engine was a real pain for me, mostly because its the first time that I've ever done it. other than that all that is left is attaching the right aileron servo control rod, throttle control rod, rudder and elevator and fuel tank install, and oh yeah the fuel tank. After that ready to fly!!! I've decided that I will wait till the winter months before putting another one together. Summer is for flying, not building.