I had the same thing happen to mine twice. Four flights into its life the wing cracked on both sides top and bottom at the LE. Called GP and they had me chop the wing up and send it back.
I got a new wing and 10-12 flights later same thing but also getting cracks in the fuse at wing mounting area.
Called again and they had me chop up the entire plane and return it. The plane flew fine with either wing just had to make thrust angle adjustments. When speaking to them on the phone they never questioned how I'd flown it and was always courteous.
As a matter of fact, they sent along a survey form to rate their customer service.
This happened back in January/February time frame. When getting the replacement kit I sold it.

Dave