And before I went to bed tonight I went ahead and glued in the firewall. I used the same technique as the first one to keep the plane hanging around so I could more easily work on getting the motor centered and taped into position. Once set, I used some Medium ZAP (Green bottle) and tacked the firewall in a few places to the fuselage so it wouldn't move when I removed the tap and removed the motor before epoxying.
In between servo mounting and firewall install, I went ahead and pulled my 8ch FASST Rx and my Shulman Aviation 6V regulator out of the Integral and velcro'd it on to the rudder tray as well. 10 seconds to do so why not
3am and time for bed...