No pic of the problem as they have been disposed of. My Nexstar was an RTF and they were installed from the factory. After removing the tape, they could be rotated up and down the leading edge quite a lot actually and still appear to have good contact with the wing. I would guess the difference from one wing being all of the way up and the other being all the way down could be as much as 1/4" when measured at the extreme leading edge of the devices. This is only an estimate since I did not care to measure them at the time. This would be the same effect as the wing being warped or twisted. With them installed, the plane would make a hard right turn when lifting off of the runway and fly in a crab that could only be made better with the addition of rudder. After removing them, the plane flys straight and true with hands off.