Also you will have to pull the cups out a little while force bending the top band if you have a big head

If you earpieces lock and the band is smooth, you've got yourself the read deal.

My solution was to just bend them out of shape -- the band is REALLY sturdy, but I got them to open into more of a straight U shape than the more Ohm-ish Ω shape they came in by bending open just the ends