Armstrong High Aspect A+ front wingArmstrong High Aspect A+ front wing The best way to exploit the potential of the HA range is to get the tail wing shimmed up. Because the wingspan is so large you need to unlock the maneuverability potential by loosening up the tail. Shimming it will achieve this. Using the 232 on the HA925 and above, we suggest at least a 0. 5 shim and for super loose a 1 + 0. 5 degree shim. Just move the mast forward to correct the foot pressure. Using the Flying V