Pivot part

I am replacing balances in my double hung windows. The piece on the L shaped bracket on the bottom of the sash that fits into the pivot shoe is broken. I am uploading a picture of the bracket and also a sketch showing dimensions of the L shaped part and where the piece is broken off. It may be hard to see in the photo where this part is broken off. Dimensions are as shown in sketch.

Added two photos of a good part removed from another sash. Each Sash has two and they are marked to their position either L or R.

Bob, it does look like the part need to take a sash apart to confirm. Thanks for your help.