Broken lock on exterior sliding glass door

A home owner from Beverly MA says:
Two problems: Previous owner did not leave keys to this door. I need to replace the lock with a new one with keys.

The brass mortise hook is broken. It's wiggly and does not catch the receiver plate.
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Thumbnail of the uploaded file named Disassembled lock.jpg
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Tom from SWISCO responded:

Thanks for your patience during this busy season. I've never seen this handle style before, but you may be able to use our 82-310 key lock as a replacement. This is a very common sight on similar patio glass sliding doors. My hope is that your handle is just a unique design and otherwise works the same as what one normally sees on this kind of door. See what you think.

For the mortise, see our 82-226 . This looks like a dead ringer for yours and just so happens to be compatible with the 82-310 .

A home owner from Beverly MA says:
Hey Tom.

I have installed the new mortise lock 82-226 and it seems to be working fine. However I have a small piece left over... an s shaped piece slightly less than 1" with a small attachment screw. I can't figure out how to place it so that it doesn't stop the lock from sliding all the way into place. Is there a video I can watch?

Also, I ordered the key lock 82-310 but it is still out of stock. Is there another model I can use?
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Tom from SWISCO responded:

I'm afraid I don't know what that S piece is. Are you saying that came off of the 82-226 ? Can you show it to me?

As for the 82-310 , that is the only key lock we sell that will work with this setup, unfortunately.

A home owner from Beverly MA says:
This came off the new 82-226 .
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Dave Sr. from SWISCO responded:

That piece did not come off of the 82-226 mortise. That hook is screwed into the outside handle to secure the key cylinder. You should have a hole in the handle to accept that screw. It probably fell off when you removed the handle from the door.

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