1) Can I just replace the inside part of the door lock in this case the door knob and maybe the tumbler latch part without having to replace the outer parts of the door lock
2) I was trying to remove the door knob. I can't see the little latch area that you insert a screw driver into and twist to pop off the door knob. Isn't that standard on all door knobs? or maybe not in Hong Kong or maybe I am blind?