Wanted: Wanted - CZ75 magazines

I have an original cz75 and have been running mecgar mags with the blue followers.  The problem is my cz75 has a slightly narrower magwell than newer models, and there are slight differences in the width of the mecgar magazines. 

This means that out of 6 mecgar mags I've ordered, two of them are slightly too fat to fit properly and drop smoothly.  

I'm hoping to buy an original cz75 magazine, or potentially trade my two slightly too wide mags to someone with a shadow in exchange for one that fits.

Asked customer support about it, and they say there are tolerance differences in their magazines, and that they all will work for the shadow two, so won't allow me to exchange. 

Thanks!