I am about to pull my hair out, both of them.
To put is as nice as I can I dislike these center feed magazines, blind and detachable.
So to make it simple I want a single shot follower, but oh no one makes them. Or I have to modify one.
Dont know about the rest of the folks but I had zero issues with any of my stagger feed actions, long, short, fat or skinny they worked.
If some one can direct me to a source I would give two of them a try. Otherwise I am about to liquidate these center feeds and chase around some of the stagger feed actions.

Jeff