My 1996 Mariner 50 4 stroke's pwr trim automatically drops down at 1200 rpms. Been doing it since new but I never worried about it until now. The motor's manual says it is supposed to drop down at 2000 rpms. Does anyone know how to adjust this or what the problem is? My Clymer's manual says nothing. It's on a pontoon boat so in high headwinds and shallow water it could use the extra 800 rpms with the motor tilted up. <br /><br />Bill