We are running a new 3300 extreme machine. In 70 hours I have had to replace 3 front casters, because of bending. I believe the bent forks are coming from abuse or carelessness. We are on a tough site, a power plant with lots of ditches and rough terrain. Other than the forks the machine is flawless. We poly/foamed the front wheels to prevent flats, some say this is causing the bent forks. I appreciate any feedback. Thanks this site is great!