Lee... there are two holes in the top of the wing next to the centerline. They line up with holes in the ribs from the servo locations.

So, we just discovered a new challenge... The wing cover plate doesn't fit... by a longshot. If you place it properly, it doesn't touch the bottom of the wing (where you glue it) for about 40% of the length at the rear. If you were to trim the front edge to move it forward so it can sit down on the wing surface, then you get a big step at the transition from the rear surface of the plate to the fuse. (see photos)

We are debating the options... make fillers to provide glue surfaces for attachement, and then fill with white silicone seems to be the simple approach. Living with the step is unacceptable to us. We may do the fillers and recover the part to make it right. This will take hours to make it right... ugh!

Another strike against BME. What next?