hi thanks for looking.i made the holes with a dremal.. i am thinking about making a new set of wings..build up. i will change the airfoil ..i think byron used an naca-64110. i dont like sem. airfoils on scale stuff. leading edge is to sharp also..it is taking to long and to much work to use the byron wings.. i think they maybe lighter..when i fab. the ducts ,ill put in a spot for the esc. i will do the ribs tonight, in compufoil..maybe a 3-5 percent camber ..