Yep, mix some 30 minute epoxy and add a few drops of alcohol to thin it. I also do any and all exposed wood under the model all the way to the tail. Exhaust can get in everywhere. Do the fuel tank area very well too, (I do two coats) because if you ever have a leak it will save you a lot of grief. I usually do this when building, easier to get in to places. Better late then never though.