I have a pair of 09s males one is 1654gm and the other is 859gm they both have eaten everything offered mostly I think the smaller one has missed 3 or 4 meals where the larger has missed 4 until a month or so ago when he went off food all together. They have both been checked out (yearly check ups) that includes a fecal exam and both are healthy and good feeders one is just not growing as fast. That larger ones mother is a monster she is just under 5 1/2 feel and 4500 gms. She has produced many snakes over the years and I know of only six females that are mature and the smallest is 5 foot. They are just huge all of them. Size is a genetic trait and some get big fast and some don't. It isn't always how good a feeder one is.