Shifing on a 1995 100 hp Merc
 

I have a problem with the linkage adjustment on my 100 hp merc. When
the shifter is in nuetral the lower unit is partiall engaged so that
when you turn the prop or when you are in nutral running you can hear
a ticking sound. but if you move the shifter slightly towards reverse
it goes away. The adjustment on the kinkage is maxed out in that
direction. I looked at the shifter and all seems fine on that end.
This changed so that I could not even shift into reverse so I took it
in to a shop and they replaced some parts in the lower unit which took
care of the shifting into reverse but not the linkage problem. Any
ideas would be appricated.