I have a 6000 equipped with four wheel drive, FEL and Shuttle Shift Transmission. I am a Stout Lad of 295 lbs and I have the seat adjustment turned up to the max and it still pounds my butt unless I travel at about 10 MPH on the road. I have county dirt roads that I travel between fields and it is a pain in the butt every time you run over a small stone or little depression. I have had an idea that I am going to tryout this week if the weather permits. I have purchased a fun noodle, the foam things that kids play with in the pool and I am going to see if putting some of that under the seat will help ease the abrupt stop the seat makes when the spring is at its limits. What the hay it only cost a buck at WalMart and if it works it will be worth every penny. I will let you know how it turns out.