Hello Everyone, This us our first attempt at the Jumbo Cornish X Rocks from Murray McMurray. We we curious what the heaviest anyone has ever gotten from these as hens and has anyone gone longer than the recommended 9 1/2 weeks. Read an old article on here that said their's were like 10 to 13 pounds and dressed out at 12 to 13 weeks. Murray states only 4 pounds at 9 1/2 weeks. Any input appreciated.