[Lynn Eades]

Is the box tight on the bracket, and is the bracket tight on the hull. your worm adjustment should be done when every thing is disconnected. When unworn it should be adjusted and tightest at the centre of travel. Basically there should be zero end float in the worm, before you wind in the screw, which pushes the sector shaft into mesh. Make sure also that the bearing mount on the floor is tight, good nick, and lubed.