You can also take A 6mm rod split it down the middle then again thru that half then one more time to wind up with A very light splint. Use two one on each side of the boom just below the cut out for the metal controls that way you don't have glue on them.Or at least A much better chance of not getting glue on them in the first place. Start with black tape to hold the splints to the tail boom position them where you want them then glue with ca. No mess this way and you don't end op with fingers glued together. When secure attach tail to main boom and also tape on, position where you want then ca. now for A better looking repair and A little strength tape very lightly in black tape the whole repair. Be certain to use as little as possible as it might effect cg. remember tape isn't the bonder here the splints and ca are so use very sparingly and when your done it should hardly be noticeable. I've now had two of these birds and I highly modify them with diffent wings and everything from A 350 motor to brushless you think its fast now, my 380 and cut wing will do about 50 mph!!! I'll explin how to do later. I tend to babble on Oh well what can I say I love this hobby good luck!