GOAL WEST917.TX, difficult to turn the key

"Sometimes it doesn't turn in the locking direction."

Upon arrival, the customer explained the symptoms. When I checked it, I found that the locking direction is hard from the cylinder side. It also felt a little hard from the thumbturn side.

Considering this, it was an operational defect due to oil leaks in both the main body case and cylinder. I won't go as far as replacing it. Improved with special cleaning spray and lubrication.