I have an 800 and the 4×4 only engages when the rear tires slip. is the 1000 the same? The reason I ask is because I was talking to a guy the other day that said one of his front CVs broke while in 4×4 in the sand on flat ground doing about 45 mph. This he said caused the still intacked CV to pull the car hard to the left and causing the rzr roll. Dose this sound possible? Im thinking he may have roll do to driver error and broke the CV in the process. Any thoughts? thanks? Hes going after the deal for a defective CV.