Good eye on the number one rib. I noticed this a day or two ago also. Not sure if its worth flipping over, would require lots of careful cutting with the exacto knife. It may be easier to modify the servo cutout. The rib is symetrical as far as I can tell so I dont think it will have any negative effects on flying if left the way it is. Once I join the wing no one would ever know but me....well...until now....didnt think anyone would notice.