Window tilt latch identification

I'm trying to repair a window. It's missing the set of internal window tilt latches.

Information about the window. It's a vinyl tilt window with the following label on the underside of the sliding part:

33 3/4x53 1/4 8501-3
20295043*1*2*1 2
30 3/8*26 5/16
Argon

The opening for the internal tilt latch is offset from the end of the window by 1/2 inch. The opening is 2"x 9/16" with a square edge on the outside edge and a semi circle edge on the inside edge. I have also attached a picture from a working tilt latch on a matching window.

Help identifying the replacement tilt latch is my primary concern. I also have a secondary problem.

The pivot shoe from the left, looking outwards, is stuck. The right hand pivot shoe is spring loaded, and appears to be working correctly. I've attached a picture of the pivot shoe. Help in identifying a replacement pivot shoe, and advice on that repair is much appreciated.

Thank you for your help.

Please disregard the issue with the pivot shoe. I was able to get the pivot shoe moving again.