Help! Sliding Hardware on Stave Core Door Failure
I have a Stave Core Primed MDF Door hung on sliding door hardware. The door is pretty heavy - it separated the bathroom from the hallway. There were two sliders installed - the track was above the door so the slides also hung the door. The door's weight was distributed between these two points. The slide worked fine for 1 year but recently the screws of one mounted slide began pulling away from the door. It began to pull the filler material out of the door. Here are two pictures.
One shows the remaining sliding hardware mounted. Notice the crack forming from the screw.
The other shows the failed sliding hardware removed. Notice an entire area chewed away by the mounting screws and the primed mdf surface is separated at the corner.
My questions are the following:
What can I do to prevent further cracking and separation of hardware screws from filler?
What should I fill the existing gap with?
I am thinking I should add more sliding hardware to further distribute the weight of the door amongst each mounted slide, i.e. the more screws there are the less the load for each to carry.
Thanks in advance for any help.