I flew a Grob-109b motor glider that had a 242lbs max weight in seat limit and that was only possible with a feather light instructor to not exceed the max gross weight. I had a friend that couldn't fly it until he spent a few months on diet pills and then he went back up in weight when he was done. He stopped wanting to be my friend because I would always tell him he needs to lose weight. That story wasn't very interesting but it's all written out now.