I don't know how many out there will be interested, but the track flex created some issues for me, and what I have read others, especially those first timers like me, who were having issues on carpet. Mine was vinyl flooring. I backfilled the hollow ties which created a more ridged section of track. It also doubled the weight. Worthwhile? Maybe, but it is fun to do and gives a great appearance from the underside
https://screenpal.com/watch/cZVlqFVJfvZ
https://screenpal.com/watch/cZVlqFVJfv0
https://screenpal.com/watch/cZVlqFVJfv3
https://screenpal.com/watch/cZVlqFVJfvZ
https://screenpal.com/watch/cZVlqFVJfv0
https://screenpal.com/watch/cZVlqFVJfv3