I need some major help. The instructions refer to the spars, leading spars & sheet at 24 inches, but they all measure out to 24 1/2 inches. Do you have to cut them to the correct length per instructions? If you have the instructions available, please look at line 5. You have to glue the 1/4" x 24" (which measures to 24 1/2" ) balsa trailing edge stock in place to the end of each wing rib. How do you that?


Manny