Sash won't stay in

A home owner from USA says:
This pivot bar slides back and forth so that it comes out of the shoe and my sash won't stay in. When I tighten the screw the the channel that the bar is in, slides back and forth.How can I fix it?
User submitted a photo of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
If the metal housing that your pivot bar fits into is loose, you will need to take sash apart and lock the housing in place by pinning it with a hammer and punch.
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