Often these symptoms are caused by wear in the nylon bushings at the end of the gearshift selection rod. Because even with brand new bushings you get some faint slack since you cannot fully tighten the nut. As I was not happy with this design and wanted a definitive cure, the solution was fairly straightforward: install thrust bearings! The idea is to replace the 2 nylon bushings with 2 small metal thrust bearings of the same size. The load is then transferred on the whole surface of the bearings and ALL free play is gone while the bearings allow for a smooth movement of the selector!!
How to adjust and index bike gears | Diagnosing and fixing common shifting problems
A boat turns in to the channel between two piers at a marina but then begins to veer off line. The skipper makes a small steering adjustment, followed by a larger one, and then he realizes that the wheel is no longer connected to the rudder. What comes next is often not pleasant, and it is why you need to check your steering system at least once a year.