RE: SSE Gap in Wing/Fuse
I had the same issue on mine. They tell you to be very careful with the root rib to make sure it lines up on the plans, and guess what? The plans are wrong!
Also, don't do what they tell you to do on the TE dowel. My right wing TE fell out of the hole on my 4th flight. Made for an interesting landing! I glued a new dowel into the wing and left 2 inches or so sticking out. Just enough so the two dowels don't hit each other in the fuse.