Do not do anything to weaken the wing joint on this plane. I watched my flying pal's Nitro Kadet Senior's wings fold while in flight. He was not doing anything but Sunday flying.

If it were my plane I would open the wing up and reenforce the first and second rib area and then make it a on piece wing.

I have a Sig Kadet Senior ARF that has been in my hanger for 6 years. And I had to open up the wing and reenforce it. My wing is still a two piece wing.

Good luck.