Hello all,
I recently purchased a No4 (my first). It came with a No1 Mkiii magazine which was “fitted” well and fed fine. In my desire to make it “more original” I purchased a non-reproduction No4 mag. I got feeding dialed in and smooth as butter, but upon shooting another issue presented itself.

The front of the magazine is slightly dislodged while firing. The rear remains in-place, but the front can drop ever so slightly. Once this happens, feeding becomes a bit of a nightmare.

What are (if any) adjustment remedies that can fix this play and get the magazine to remain firmly seated as designed? Any thoughts appreciated. I’m happy to take pics if it will help with a resolution.

The front “spring” that folds over the lip of the magazine is still present, and overall the magazine arrived in like-new condition.
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