Yes, the plans are correct and tails aren't falling off. Everytime you beef up something, the stress just gets moved somewhere else. Not saying the anti-splat part is or could cause a problem. The RV-9 is an engineered airplane.
Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
EAA Homebuilt Council Chair/member EAA BOD
Van's East Coast Representative