Inspection and repair of SEKISUI Sha-Maison type WEST push-pull handlebar lock operation defect

"The cylinder is difficult to turn"

It was a newly built property on a hill not facing the road (it was not SEKISUI SHA-MAISON). You have to climb stairs and a slope from 50 meters below. The tools are really heavy.

The cylinder was OPNUS MEMOLIS. There is no door post or door scope. Moreover, it comes with a thumbturn of PATANTE specifications.

Well, the cylinder set is quite dirty considering it's relatively new. Is it due to aging due to dirt? This time I was able to improve the problem by spray cleaning the cylinder.

In the case of Unlocking the entrance door, the lock has been confirmed. Replacement parts are available for WEST cylinders, but OPNUS cylinders are OEM specifications, so you cannot install anything other than OPNUS cylinders.