RE: Black Horse Macchi C.200
Hi JazzboneCuit,
The wing attaches the same way as the giant Hanger 9 P-47, if that's any help. There is a left and right wing panel that side onto an aluminum tube. There are then thumbscrews that you tighten from the inside of the fuselage to secure the wing panels in place.
They also provide a second method of securing the wing. There is a small hole in the upper surface of the wing (by the white triangle) where you could insert a screw and tighten it into the aluminum tube. The have put vinyl tubing inside the aluminum tube to keep the screw from vibrating loose.
I'll probably just go with the thumb screws from the inside of the fuselage. It has worked fine on the P-47.
Hope this helps.
Jay