Exact same question I was going to ask. My bag is about an inch too big on all dimensions. But, it isn't a wheeled bag. It is a soft fabric shoulder bag, so it definitely has some give to it, and can be smushed together some.
And, I really don't have any other options, other than bags that are too small, and I really didn't want to have to go out and buy another piece of luggage.
I am hoping they are not too strict. My bag will definitely not be too heavy...it's just a matter of the size.