Originally Posted by dan-nickie
Just had this issue a couple months ago. Other board members told me what to do. The small post that slides back and forth in the slot has a small metal collar around it. That collar is split on one side. Take a small screwdriver and gently pry the collar open slightly to create more friction.
I spread the collar and it broke with a piece falling out; hence a new door bracket from PTL.
The collar is spring steel and what makes matters worse (at least was on mine), the collar has a small rivet to the post that cannot easily be seen. To me, it is a bad design. The door check should be more robust. Silver's idea might be a better approach.