Actually, I've not found the play to cause any ground handling problems. It just beats up the innards quicker. And sometimes rattles in flight. When one of mine got real bad, I ordered another set, wanting to stay with the same brand. The "same brand" that showed up was branded as World Models (if the WM on it means that). And had no play in either side, so I swapped both out. I immediately ordered some from WM and got ones that looked the same and didn't have WM on them. And were a bit sloppy.

Not a one I've gotten has a blue metal casing.