[DonVoigt]

Yes,
the round tab is in the "wrong" spot; judicious filing will make it fit.
Keep the edge perpendicular to the outside, and go slow, use a file with a safe edge so you don't score the body of the ejector- or it will create a likely spot for failure.

You may have to work down the forward, inside angled, edge of the angled tab to let the ejector go slightly forward, it may not have enough clearance to fully enter its recess.