I'm not going to look back and read all 'our' post but I wonder from your recent post if you possibly have mags for an older, first edition, P89?
How many magazines do you have for this pistol? I could send you one of mine to try.
edit: well I just tried this, original P89 mags, in a P95 and could not really tell the difference but I do have to say after spending the last 8-9 years shooting Sig P pistols and all my Ruger P95's and 89's put away I really don't like the mag release on the P95. I is much harder to engage than on my other pistols... even the Glocks