Welcome to the forum. Nice hull number. You get the Senior hull award.
We have a wheel mount autohelm (though the number eludes me I think it's 2k?). So I can't answer your primary question but I can say that our very old model (1995-ish) does pretty well. It's all in the sail trim. If we're on a close reach with a lot of weather helm, the AH does get overwhelmed and starts hunting back and forth. Same with a Beam reach in 20KT+ winds. But when it's important enough to get away from the wheel I've found that tweaking the sail trim and/or reefs can give it more balance. You may lose a couple tenths of a knot in speed but most days, we're not trying to get anywhere fast when the autohelm is in use.
That said... looking at your manual you seem to have plenty of adjustments to change it's personality. (section 3.1) Also the note on pg. 19 for the linear drive unit seems to guide against your setup...
Quote:
When the rudder is driven hardover check
that the mechanical limit stop on the
vessel?s steering system is reached before
the actuator reaches its mechanical limit.
When the rudder drives hard against the end
stop check there is no visible movement of
the actuator mounting pedestal or the
structure supporting it.
http://www.raymarine.com/raymarine/Subm ... Analog.pdfI'll verify our model this weekend when I visit her (on the cradle
)