Hi all. I'm considering purchasing one of the Kato Gunderson stack car sets. As these come loaded with one container type I thought I'd also get a couple of their container 2-packs to liven things up a bit. However I've read comments online that suggest that the containers that come in the separate packs are a different size than the ones that come with the car sets. I'm hoping this doesn't mean that the sizes are simply incorrect. Perhaps the stack car containers are standard height (8'6") and the separately packaged ones are hi-cube (9'6")? Does anybody happen to have the containers in question and can confirm the sizes? Thanks, Rob.