I noticed the ptg has the same deal...the AW mag has some play from the point it clipped into the dbm until it stops going in any further. I have no idea where yo start on how far to set the mag in but yours seems like a good number. Maybe I can get ptg to give me some specs and just not worry about it.

Of course the AW mags won't fit into the new center feeds any ways so I await the aics mag they are suppose to be sending me so I can get to work on this