I have a 1979 M20J.  Normally I can rotate the trim wheel about 6" per grab.  My wife can do about 4" per grab because she pulls the seat closer. The problem is, when I rotate the trim wheel it rotates 3 inches before it actually starts moving the mechanism. When I let go of the trim wheel to grab to continue trimming, the wheel rolls back to the slack position. This means that for my 6" rotation I only actually move the trim 3".   But for my wife's 4" of movement, she only get 1" of u