I was talking to a guy at work and he recommended this. He told me to put a bushing in front of the strut and between it and the stuffing tube. Kinda like a drive dog w/o the dogs with the set screw holding it to the prop shaft. He said if the flex shaft breaks where it joins the prop shaft you don't lose your prop. Sounded like a good idea just have not seen anyone using this. Any info guys? Oh btw not talking the junky u-joint set up either. The fixed prop setup.