Inner cooling functioning doors.

pic 1:
Some 1" triangular balsa block and 1/16" thick re-inforcement ply for supporting the back of the tray.

pic 2/3:
Close/open dry run using just some #0 screws to hold the pivot points of the rotating doors.
The hex head servo screw is holding the back of the tray to those triangular blocks that were epoxied inside the fuse.

pic 4:
Right side.
The Corsair cowl is working out nice: I used about a 1/2" of the front of the cowl just where it starts to curve which helps the doors bend inwards at the front of the hole so the doors will less likely catch on the door edge.

pic 5:
Dry fitted a 1/4"X1" wide thick balsa in the fuse to hold the front of the tray.
Like all the other trays, this one will also be removable for servicing.
Still have lots to do: add support to the doors, plus an arcing hole in the door supports with screws to keep the wind from lifting them up from the tray, servo and connections, etc.