I am playing with a 7'2'' guy, who's supposed to be monster at grabbing rebounds. But in the game, he averages like 4 or 5 rpg. Once, in 18 minutes, he grabbed only 2 rebounds

. How do I increase his rebounding? His defensive rebounding is 95, defensive awareness 98, jumping 93. I also increased gameplay stats to 99 rebounds, but no change. Please help!