Aerospace engineers should NOT design door latches.
Jesus H Christ on a Pogo stick….there are 2 lbs of unneeded screws in that door.
Plus the latch is extraordinarily complicated and WAY too heavy for the job it does.
Yes, I am doing my own plane maintenance.
And Cessna wants over $400 for a set of lock cylinders. I gotta talk to a locksmith and see if he can fix ’em.
At least the door locks properly now though.