Fix it or send it back.

I was in the same boat as BGI, unfortunately it wasn't noticed until it too late.
Mine took allot of rudder trim to correct, I also added more thrust to keep it straight on full power vertical up-lines. But, this really hurt other areas especially knife edge. Mine is currently tossed in the back of the shop, less engine & servo's. I will eventually cut out the stab and replace it. I threw the aresti together in two days---never again will I hurry.....Dave