WEST916.LSP, I can't remove the key

"I just moved in last week, but now I can't get the key out."

Apparently he just moved in last week. Apparently the lock was changed before I moved in. It was definitely a new cylinder color.

However, the key was difficult to remove even with normal spray cleaning, so we decided to disassemble it to clean it from the tail side as well. I finally got the key out after cleaning it several times.

I heard that they had replaced it with a new one, but as soon as I washed it, dirt came out. It looks like the cylinder core was not new.

I reassembled it after improving the cylinder side, but the door is thin and has a lot of distortion, so when I tightened the screws to the normal torque, the thumbturn's drive shaft interfered with the lock case. Then the cylinder becomes hard and will not turn. This is a common phenomenon in LSP etc. Installation was completed while adjusting the screw tightening torque.