ORIGINAL: combatpigg
I "pasturized" my ARF PREDATOR by removing the gear and running the engine up right. Toothpicks will help somewhat, but the real fix is to wrap the outside of the firewall and forward fuselage with resin and cloth, and to add pine blocks under the wing hold down blocks. I had to scrape away the excess hot glue to work in the extra wing hold down wood. It is a nice plane once you get it sorted out, flys so smooth, it's almost boring.
When the Nelson Q500 is upright the muffler would be in the way of the wing. The only way to get the muffler off the bottom would be to put it on top of the wing. Instead I will beef up the front half of the bottom with fiberglass.