RE: Phencepost
In your research Frank you might look at recommending a tether system for engines. At the last Hell over Hillside meet there were two engines lost in the weeds. I don't recall if any were true Avengers or Phenceposts designs. I forgot about engine tethers when I went to the twin "U" channel "Battle Axe" fuselage for a motor mount. I'm building three of Mike's Zeros now and will put tethers on those engines.