Want to replace sliding glass door lock

A quick learner from Ocean Park, WA says:
Please make it simple! LOL! I just bought an old mobile on the lot next to mine. The key lock is funky. Hard to get to engage. Anyway, where I live there aren't locksmiths close by. About 45 minutes away, so I"m going to try to do myself. Anyway, the Mobile was built by Skyline homes and is a 1986. The marking on the lock says MA108.
Would you have a replacement (again! easy to install!) for that?
Thank you! Toni M
Thumbnail of the uploaded file named Graysie Lock.jpg
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Manuela from SWISCO responded:

Hi there. We may be able to help with this. To start, could we have you send us a photo showing the interior handle set? That will give us more of an idea of what you're working with. Thank you. 

A quick learner from Ocean Park, WA says:

Thank you! Here are pix inside and out. Have a nice weekend! Toni 

Thumbnail of the uploaded file named Graysie Lock.jpg
Thumbnail of the uploaded file named Graysie Door.jpg
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Paul from SWISCO responded:

Thank you so much. I think I can help.

To be honest, everything looks to be in good condition. If all you need is a new key lock, I recommend our 82-310

Installation is fairly straight forward. What you need to do is remove the outside handle, slip the old key cylinder out, then put the new one in its place. You might need to cut the new key tail down to match the old one, so make sure to take note of its current length.

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