Slam latch

I have taken one slam latch apart to see if I can replace the tumbler. All five of my slam locks are screwed up. What I found is that the tumbler seems to be solid with no way of removing it. I would like to replace all of the slam latches and the front door latch with keyless ones but the cost is too much. ie 240 for the door and about 180 for a keyless slam latch. Anyone have any suggestions
 
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