You wrote Unless I'm mistaken, the "new wings" are only a new airfoil design optimized for the KR's performance envelope. Nothing was done to change the wing spars, which are the structural part that transfer the loads.
That is true for the as5046. The as5048 is inherently stronger since the spars are taller and the chords are further apart. On mine, the chords are also thicker giving even more increase. https://sites.google.com/site/mykr2stretch/ https://sites.google.com/site/mykr2stretch/parts-for-sale
