My builder just installed four Toto Vespin (which I understand is Drake with a skirt) toilets in my home. I love them. They work great!

The tanks on all units have a little bit of play front to back-- you can rock the tank a bit. I was expecting the tank to be solid with no rocking possible.

Is this normal or does something need to be tightened more? The installation sheet says not to over tighten, so I didn't want to go messing around with it if it's how it is supposed to be.