Inner cooling functioning doors.

pic 1/2:
Two control horns were screwed/epoxied to some balsa triangular block and then epoxied to the door supports.
Also, some 1/16" thick ply was cut and epoxied to the door to keep the door from flexing.

pic 3:
The tray was cut for the servo and some balsa blocks were epoxied to each end for the servo screws.
I used balsa for the servo blocks to save weight since this is behind the CG and moving doors is not a critical failure should they come loose. I'll CA the holes in the balsa to give them some extra strength.