I will try to get some pics and hopefully sent them. Computer expert I am not.
Indigo22-- Thank you for your effort! Mistake on my part. The "ridge" at the rear of mag. is a single ridge, in the center.
FYI This is an interesting 'case' to solve. I'm going to pursue this to the end. Why do these thing come up, when I'm to busy to..[you know!]