Also I do have full load(2500) in the car and I measured the slide on the rails to be 6"...... This was a brand new machine only a week old , so it wasn't worn in at all like usual .....running it to install all hatch equitment and so forth....it is a 350fpm car so not really fast car but if u c this video it is something else ! So please send me your e mails so u can check out what I was seeing....