I have a 2008 hpdi 3.1. Last march yamaha replaced my whole tilt and trim unit cause the cylinder rods kept mushrooming out on the ends and tearing up the seals. Well here we are again and same problem. Been putting grease on the ends too. Anybody else having this problem? I know mercury has like a roller on the end o of the shafts to prevent this. I think they need to make it out of better material.