spill
TRP,
How big of a fuel spill was it, and how did it occur? Knowing the severity of the fuel saturation on the wood should give us an idea of the extent you need to worry about it. As for my easy extra, I never fuel proofed any of the insides, in fact, b/c of the way it was manufactured I didnt have to do much at all to the insides, except reinforce the firewall with some triangle stock wood.
Happy flying
-crf