[Chrislong]

Hey Jez, that is strange. The boxes should all be the same. I do know the regional box is wooden, but the national box is alloy - so perhaps the wooden box is tired now? I dunno, only guessing.

The car should fit in the box and not drag against the sides at any point through the cars suspension travel. For example, if you put your car in and press the shocks down, and pull it up to wishbones level (widest point) it should fit. If you come to lift your car out and it brings the box with it - its too wide. LOL.

As the tyre edge is usually the widest point, its safe to say the car should rattle a little in the box and not touch both sides at once. The tyre being rubber will naturally make them want to lift the box if both sides touch.