LB.DAF-B5, entrance key operation defect check

"Sometimes it's hard to turn the key."

``It feels like it's getting stuck when I turn it.'' I moved in a week ago, and it appears that the cylinder has been replaced. There was no problem with the operation, but instead of "getting stuck," it seemed to be "a little heavy." It was also a little heavy from the thumbturn side, so spray cleaning the lock case fixed it. Although his senses vary widely, he seems to be a very sensitive person.