Lol thanks for adding the bonus clip at the end. I was also curious of the finished product 👍

This video should be called "How to clean your sliding door". The wheels are still grinding on the track. Spraying lubricant will never replace the grease in the bearings, in fact, it will wash out any remaining grease. You need new wheels. This will damage the door track.

Oil gums it up eventually. Ask me how I know!

This is a constructive criticism. Apologies. Your video is not on sync with the sound. You didn't show how to adjust or replace the rollers. it looked more as an ad for WD40 (which we all know it works wonders in a lot of cases but, as K Owen states, it doesn't substitute for the grease in this case). I think that your information is useful but you have to improve your presentation.