The Stovebolt Site Forums The Parking Lot Panels 'N Burbs Barn Door lock

So, in my want to increase the awesomenes of my panel, I've decided to put a lock on the back doors to keep the honest thieves at bay. And to fill the unsightly hole.

So, Here's what I've got:
http://i221.photobucket.com/albums/dd45/HomeCrafter/IMGP0001copy-1.jpg

As you can see, I've got the old latch, and I've got a new repp lock.

Now, to get this sucker to work, do I need to file the hole in my door latch bigger, and make it look like the one on the front latch? If I do this, I'm not sure I will get enough "turn" to lock and unlock the latch.

Or, do I want to file down the "stick" on the lock, so it fits in the little hole.

Or, the third possibility, is that my lot latch is missing something.

Anybody have a picture of what this is supposed to look like? (my truck had no locks when I got it)

Thanks a bunch Bolters, and Happy Thanksgiving down in the States.