Yeah it's weird. I was gonna joke that maybe you used a bucket-load of glue, but I don't want to hurt any feelings.
Maybe just a little more foam and a little more glue is all it takes. (?) I try to give my designs miles of battery space because I have no idea where it'll want to be. I haven't had much hands on experience with FT designs, but I get the impression there's not a lot of play in battery placement in some of them.
But I think it's the socialists trying to mess us up.