what size engine did you have on it? my friend's wiong came apart because he had a .61 fx in there, using higher than recomended throws. his wing broke off and he lawndarted it past the pits and into the parking lot. that was his fault though, because of the engine size and the throws. here is a tip when joining the wing. wrap masking tape around the edges of the surfaces you are joining, put more than enough epoxy on, and press it down hard, so all the excess oozes out, so you have all the wing can handle inside. it is a good idea to hold the wing halves together using rubber bands tied together, keeping in mind the plane has low dihedral. however, you can adjust tensions on the front and back sumply by moving the rubber bands. follow the instructions WORD FOR WORD except with the mounting of the fuel tank. they reccomend fastening it to the airfram with silicone glue, but that causes the fuel to foam. instead, isolate it with foam, and don't hard-join it to anything, and you will have a lot better engine performance.