I have a 2007 50hp Mercury 3 cylinder, 2 cycle on my pontoon. When I place the throttle into what feels like it drops into neutral, also adjacent to the "N" on shift handle, the prop spins freely but makes a clicking noise. If I move the shifter back about another 1/2" inch, it feels as if there is another small spot on the shifter that it lightly falls into and the prop then spins freely and no clicking noise. I believe this is the actual "neutral" position. Is there away to adjust the shift linkage, so as to tweek the shifter so it go completely into neutral, without pulling it slightly past the neutral indent by aproximately 1/2"