The firewall is now completed.

Soldered 4 mm Castle bullet connectors to the Himax 6330-210 motor leads, added heat shrink tubing. Connected to a 70 mm Falcon three blade spinner.

I used Hysol 1C (that's what I had while waiting for the HP 60 to arrive). The adhesive sets up in 25 minutes, dries white and easy to work with. Applied an adequate amount on both sides of the firewall. To keep the lines of epoxy straight I placed masking tape to the fuse and the firewall to replace an ugly mess. Spread the epoxy, worked into the gaps and removed the tape.

I placed a 1 mm carbon fiber sheet sandwiched between the motor and firewall with a 2 mm plate on the rear of the firewall. This helps spread the load when you wrench down on the motor mounting bolts, IMO, and prevents the oversize washers from crushing the wood. Applied loctite thread locking paste (blue) to the motor bolts and called it a day.

This is as good as I get.

Next step, cut the cooling vents on the underside of the fuselage.