I run a 2006 Ranger 521 with a 06 HPDI and fish a lot of weedy rivers and lakes here in the North. My overheat sensor keeps going off when I run through the grass. Its not really thick stuff either... most of it is stringy grass. I keep a long brush on me and have to shut down all the time and brush grass out. Its a pain. Didnt have any problems with my Optimax although it suckes as a motor overall. Any suggestions???