Steering Assist "Centered - Deadband" needs adjustment?

[2019 G21]

When I have the NISA set to auto in either low or high setting and I am driving the boat dead straight, the NISA is showing 1 click to the port which in turn causes the bow to turn port. So to keep driving straight I turn wheel to starboard. But once NISA enters the "Dead Band -Centered" location indication on the LINC screen and shuts the thrust off, then I am actually turning port. So as I am trying to drive straight, I am constantly driving zig zag port to starboard because NISA thinks centered is in the wrong location and activates while I am driving dead straight. Over the last couple months I have been using NISA in manual mode for maneuvering when moving slow around downed boarders while weighted as the system is really just a fun to have feature. However, when I am not driving and have other people in my crew drive the boat (who have little experience with inboards), they have a hard time driving while weighted at slow speed so I turn NISA to auto for them. Thing is that with the NISA not being centered, I feel like they are zig zagging toward me in the water just as I experienced.
I have already tuned the rudder trim to full port deflection which has helped but I think my NISA needs more adjustment somewhere else in the system. Does anyone else have this issue or know if there is a way to change the deadband-centered location in the LINC software or adjustment in the rudder linkage somewhere?

[ST3]

I’m definitely curious to hear how you get this resolved. I’ve never used mine with anything other manual mode.


Sent from my iPhone using PLT Nautique

[2019 G21]

I’m definitely curious to hear how you get this resolved. I’ve never used mine with anything other manual mode.


Sent from my iPhone using PLT Nautique

I am going to have the dealer look at it when I take it in at the end of summer. Not worth taking to dealer at this point as its just an annoyance. I was looking at it last week and I think there are several ways that this could be adjusted. The rudder assembly for the NISA boats have what looks like a big stack of magnets attached to the tiller assembly. There is also a sensor coming off the tiller that has what looks like a magnetic pickup that rotates as tiller moves. I am guess this is what reads center and how far steering is being turned. My thoughts are that the sensor can be rotated to adjust center, or a person could slide steering cable in its clamp assembly by tiller by an 1/8th inch or so. Or it could be that the sensor could be re-centered in software. Will need to get it fixed as currently if system is set to auto, when I drop below 4mph the boat takes off in the port direction and then when I correct to starboard NISA turns off them I am going to starboard. For me I like manual mode and will not use the auto mode. But my friends seem to like to drive in auto when I am behind the boat.