I WAS AT THE FIELD WHEN THIS PLANE WAS TEST FLOWN. THE WING DID FLEX, I SEEN IT, AND IT WAS BROUGHT IN, I WAS THERE AND I BELIEVE HANGER NINE IS JUST TRYING TO WEASEL OUT OF HELPING A 15+ YEAR LOYAL CUSTOMER. THEY DID NOT EVEN ASK WHAT ENGINE WAS USED UNTILL AFTER MY FRIEND HAD PAID $200 TO SHIP IT BACK !!!! I BELIEVE H9 SHOULD HAVE ASKED WHAT ENGINE WAS USED BEFORE IT WAS SHIPPED BACK, INSTEAD OF USING THIS AS A PLOY TO RIPP OFF THERE CUSTOMERS, SHAME ON YOU H9 !!!!!!! HOPE YOU ENJOY SPENDING MY FRIENDS $1000