Well on the 3rd flight of my 35% yak I heard a strange noise while flying, after coming back around I see some covering hanging off the wing! So I bring it down and to my amazement, the whole wing panel covering came off! I wasn't even doing any hard maneuvers or flying Mach 1. It appears the covering wasn't over lapped enough on the leading edge and the seam is at the center of the edge as opposed to being down further on the bottom of the edge of the wing.
I had called Brian at Ultra Rc to see what the scoop is.We'll see.