I would like to reduce the slop in the steering system so I read up on it in the manual and came across one of the many Merc "IMPORTANT" boxes..."slight feed back could be encountered if cable guide tube flat surfaces are not positioned vertically." Mine are horizontal. I don't know what slight feed back is and sure could use some enlightenment. Also can't find a grease fitting for it and was wondering if it might have been eliminated.
is this the searay with the I/O in your signature?
if so, are you sure you have slop and not just suffering v-hull bow wander? this occurs between idle and when you are up on plane on all single engine v-hull boats. a single prop will cause the back of the boat to push to one side, until the forces on the skeg push it back. if you try to correct for this, you just make the issue worse.
yes, on the alpha drive Power Steering actuator, if the servo pilot sleeve is not set correctly, the steering will fight you vs helping you.
do you have slop in the tiller arm at the drive?