I have a Mazda axela and when I close the driver side door I get a sound of hitting mettle. when I checked door latch found the plastic cover of the door lock has been removed. If I were to replace the lock it would cost 5k least. I can wrap the body lock hook with some tape to prevent the sound but it is not reliable. I have heard some do cover the body clam with heat and bod rubber / plastic as well.
would appreciate any suggestions and places they fix this issue.