Awning window parts

I'm located in South Florida there must be over a thousand units that have Windows like these. The problem is this there's three windows in a row from top to bottom when you crank the window closed apparently it shifts upward and locks in to the hook you're seeing in the picture. On one side of the window it works perfectly but on the side without the handle which is what you're looking at it just doesn't lock. Doesn't appear to be broken any of the parts they seem to move smoothly. In addition the handle mechanism I needed to replace and I got a unit but the whole for the screw that connects to the window assembly was the wrong size. How did these things fully lock in place is it simply that when you crank it it does move up and it's just age isn't going to allow it to do that
Any ideas or suggestions would be appreciated I know there's a lot of people here who have similar problems and they just letting them go