I have a 1998 50 hp 4 stroke Yamaha with a t/t gauge that does not register correctly.When the engine is fully down , the gauge shows only 1/2 down , and when the gauge shows full up , the engine is only 50% up.Can someone tell me how to correct or adjust the gauge or whatever is neccessary to correct this situation and have the gauge show an accurate postion.It is difficult to see the engine from the Helm of my pontoon , so the trim gauge is very important to me.Thanks for the help.