[lukevanoort]

Be very careful with four wheel drive, as it is unbelievably easy to make it unable to turn. Last year this happened to us and we had to put epoxy clay in the treads of our front wheels to allow "real" turning. It actually did turn without it since the drivetrain's torque would twist the chassis so we'd lose some of or an entire contact patch letting it rotate until the chassis flexed back. Don't let this happen to you.