The 5'6" will be what the setting will be based on, he could weigh 188 or 253
He should check his height again with a tape measure. He may have gotten shorter with age due to gravity, and 5'6" is right on the other side of the height setting I bet they look taller though, again way to go dropping that 65 pounds.Correct. It's whatever gives the lowest setting, his height or his weight, and in his case it's his height that gives the lowest setting for both weights.