OK,  I am getting to the part of my build that I have NO experience with and this worries me the most.
Maybe a few close up photos and some detail on how would help me.
I am building the Replica Magician that was drawn by Larry Renger and Now I'm close to mounting the electric parts. But how is a bit of a quandary. The mounting of the motor NO problem Just screws onto the mount. Then there is the wore connected to a timer that's Velcros to the esc. But I see No mounting method that jumps out at me on how to attach this to the fuselage.

Go to Home Depot and get some industrial strength sticky backed Velcro. A small piece on the back of the ESC and the matching half on the fuse, same for the timer.

One other point, on a profile keep the rear of the fuse stiff and use good size fillets on the stab to keep it from twisting. This keeps the ship flying true in the wind. In the wind if the fuse is to flexible the stab will twist and the ship can go to strange places up top.

Best,   DennisT