Here's a thought people. Enter your dog in a conformation show. Ask the other exhibitors to give you an honest evaluation of the structural weaknesses of your "athlete" or the strengths. Then maybe when you see the latest greatest NFC with a HORRIBLE front assembly you wont breed your bitch to him as she is bad in the front and has a "Gay" tail like the grandsire you are line breeding on. Then 7 out of the 10 puppies will be able to work past the age 8.
Both ends of the Labrador world are out of whack.