Glow fuel in a balsa and ply fuselage can be a real mess to clean up.........and if it soaks up enough fuel it will cause the covering to come loose in the affected areas. An effective means of clean up is a spot lifting product call K2R. It is a well known remedy for fuel soaked balsa and ply. You can find it at most hardware stores in the cleaning product aisle.

About gas power on this plane.......the original thread starter was MinnFlyer...........he used the Zenoah G-20 on his review Camel. The weight of the motor was just right to get this short nose airframe to balance.........power was more than required.
The RCGF 15 would be too lite.........lots of lead would be required to achieve the proper CG. I think the DLE 20 would be a little liter than the G-20 so, some lead would be required. I was looking for someone that had first hand experience.
Many have powered this airframe with small gas motors in an effort to use a power plant that was heavier to get away from all the useless lead.