Roller wheel for kitchen drawer

As best as I can measure, the post is about 1/8" wide, the roller wheel is about 3/4" in diameter and the width of the roller is about 3/16". As you can see, the roller is held on by a rivet or a cap. The photos above show what the roller looks like and what the post looks like. I would just replace the whole track but the track also doubles as the entire side panel of the drawer. I have not been able to find a replacement panel like this or a replacement roller that will fit on this post and fit in the track. Thanks for your help!