So my son had the 02 660 out on the dunes for about an hour and had to be towed back to camp. After further inspection, I had found the splines on the trans output shaft had completely stripped. The nut and washer were still in tact and seemed to be tight. Has anyone else had this happen ? Not looking forward to a complete engine teardown to replace the shaft, but will tackle it ASAP. Any suggestions or input would be appreciated.