Sliding Door Track Guide Insert

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.