Have a 1989 3.0 L Mercruiser on an 1989 16.5 ft Oliver. The trim gauge is off slightly, in that when the drive is down to its limit , the needle on the gauge is off the scale. I would like to readjust so that right down is at the lowest mark on the gauge and when the boat starts to bounce it is at the upper white mark. Any ideas on how to do this?
