Crazy Eddie, the first Picture shows the screws, I screwed 2 servo screws into the back of the cover into a piece of balsa ply I doubled under the frame towards the rudder. there is a tongue on the front of the cover Picture 2 I just slide under the exsisting lightning hole. quick and simple. make sure you use a spacer the same size as the cover inbetween the tongue and cover.
Sorry it took so long to respond I forgot we had this page lol.
Os 70 4 stroke surpass II 14x4 13x4 12x8
OS 61FX 13x4 and 13x10 for a hoot
Servo placement to go with Tweplica plans