Help with track cover for a Capitol sliding door

A quick learner from Weymouth, MA says:

I need to replace the rollers and probably need to install a track cover as well. I know that I need either of these rollers: 81-017 or 81-016, but I am not sure which track cover I would need. Can you help please? I posted some photos for you.

Also, should I use the Slider Slicker Track Lubricant after a new track cover is installed?

Thank you for your help in advance.

Best Regards,
User submitted picture of sliding door track.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting! I, personally, like to use the taller 80-100 track cover. However, you should check your existing track to make sure that the sizes are the same. If not, let me know what you have, and maybe upload a few pictures, and I can help you from there.

As for the lubricant, it's not necessary but it certainly is helpful.
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