Heck, I fuel proofed all exposed wood....Engine Box, firewall, fuse front, Landing gear slot, and the entire wing saddle down inside the fuse about 1 inch.

I use 30 minute epoxy, thin with denatured alcohol to a water consistency. Paint it on then hit it with a heat gun to flash out the alcohol. Then I wipe it all down with a paper towel to remove any excess resin on the surface.

Richard