Just a quick update. Fuselage complete. Fuel tank compartment lined with foam and fuel proof. Made a slight mistake by test fitting the tank one last time and forgot to put my string pull tab back on. However was able to get it out by poking the tank through the fuel tube hole in the firewall. The tank is nice and snug.

There was a small gap at the bottom of the firewall, so I glued a piece of balsa to the base to prevent fuel or oil from leaking back into the fuselage. You can see this in picture #3.

I've also just completed the stabilizer and fin. On to the control rods. This should be interesting.