Two pieces of 3/8” ply were cut and sanded to the width of the fuse at the rear of the wing saddle opening. They were installed to the width of the servos used, and were both glued and screwed to the 1/4" square spruce sticks that run the length of the fuse.
The engine mount and YS .70 were installed. Servos were installed and the throttle pushrod was installed. I chose to enclose this pushrod in a piece of scrap 1/4" hollow carbon fiber rod so that any friction with foam that later insulates the tank, battery, and receiver will be eliminated.