REPLACING A BYRON A-4 WING SET. DONT LIKE THE FOAM THEY USE. I THINKING OF USEING A NACA 9% SYM.AIRFOIL.. NOT A CAMBER ONE. NEED LESS DRAG. BUT ALSO WOULD LIKE TO HAVE IT PULL TIGHT TURNS.. MY SECOND CHOICE WAS A- RG 9.3 AIRFOIL. .045 NEG.MOMENT.. MAY NEED 1 DEG POS. IN MAIN WING OR .5 NEG IN STAB.. ANY OTHER SUGGESTIONS?? THANKS LOOKS LIKE EPPLER 193@ 9.1%1.5 %CAMBER. DONT HAVE DRAG INFO YET..