That line about rounding off the set screws hit home for me. I used to grab whatever cheap key was on the shelf because I figured metal is metal, right. Then I had one twist apart inside a lock on a Friday afternoon and spent my whole weekend kicking myself while the customer waited. After that I started paying attention to the steel and the heat treat, because a soft key does not just fail, it fails at the worst time and takes the lock with it. Two hours of drilling plus a new lock is way more than the $75 you saved. Waiting on the OEM is cheaper than losing a day.

It's always some hidden setting, like life's little joke where the fix was there the whole time.

Is it bad that I check my coop every night like a paranoid dad checking if he locked the front door? I built mine with hardware cloth buried 12 inches out in an L shape after a fox got my first two hens, and my wife still makes fun of me for it. Then our other neighbor lost four birds in one week to something that dug straight under his plain wire. I just keep my mouth shut and refill my coffee, but man, it is hard not to say something.