Question: My VMAR model came with a long aileron running along almost the entire trailing edge of the wing panel. My model also came equipped with four servo mounting bays and instructions for the optional cutting of each single aileron into a flap and aileron or flap and flaperon. I have cut each single aileron as instructed. Should I seal the exposed wood ends of each of the resulting control surfaces? What should I use for sealant that will stand up to fuels and oils?

Answer: Yes you should seal the exposed wood ends so that they are fuel proof. You can use ZAP-CA as a quick sealant. Just apply a small amount at a time and let it wick into the wood. A better solution would be Pacer Finishing Resin which is a thin two part system that you mix together in equal amounts and then brush on.