LOOSE DOOR KNOBS ARE CAUSED BY:


1) HEX SCREWS LOOSE.


2) MISSING HEX SCREWS.


3) HEX SCREWS NOT POSITIONED AT 12 & 3, OR 3 & 6, OR 6 & 9, OR 9 & 12.


4) SPINDLE THREADS DAMAGED.


5) SPINDLE TOO SHORT TO ENGAGE HEX SCREWS (THICK DOOR).