If you notice that your door knobs or door handles are too loose, you can follow these easy steps to tighten them:
• First, locate the screw on the bottom side of the handle.
• Then, using a screwdriver, securely tighten it until it feels very snug.
If the latch does not re-engage, simply apply a lubricant, such as WD-40, to it. Over time, the latch will loosen.