Track Question

Mine was on carpet... I had the Besttrack level legs and then I added my own in between those... I never had an issue when I left it up 24/7 and the past few years I have taken it up and down each year and still had no real problems with it being level. I leave the level feet right where they were at and put it back in the same spot and kind of shimmie it down so it is seated into the carpet. Maybe I am alone here, but I find that I can use my unlimited car each time and run it down the track and as long as I keep the track straight and fairly leveled the times are really close every time I set it back up... like with-in .001. To be honest I am kinda amazed how close it is each time I tear down and re-set it up. If I had known this during the 4-5 year it was always set up in my basement I would have tore it down and got it out of the way more often.