My apartment complex won't fix the closet door tracks, the real parts to keep the door in the track were broken or gone from the start can I can't find any that work with these doors.

This inset just slips into the track to keep the doors guided and not swinging everywhere.

I used 25% infill because the track is also not uniform and some of the areas needed to be hammered down into it. Found 25% was enough to not crack the piece.