RE: Advice on ARF build.
I think regent's got it. Fuel proofing the engine compartment? Hobbico recommended an epoxy/denatured alcohol mix brushed on. I have heard about epoxy/lacquer thinner, epoxy/acetone mixes. I'm going to try the epoxy alcohol on my new ARF. I'm fearful that lacquer thinner and acetone may corrupt the epoxy mix.
Bill