23' Sceptre I/O - severe wandering at low speeds. Advice needed.

[bigeasy1]

Funny,my 74 Tsunami with a Mercruiser I/O Alpha drive and a 350 engine with power steering doesnt wander even a tiny bit.
Wether i'm under power or at less than displacement speed,it will stay straight as an arrow even with my hands off the wheel.
I even removed the zinc anode rudder when I put the 15-1/2" Mirage prop on it as it didn't clear the prop,and it still runs straight as an arrow.This Alpha drive with power steering came with the rudder anode tourque fin on it.
I may be just lucky or maybe the power steering feature makes it less prone to wander.

I always run it with the outdrive tucked in as deep as possible.When I replaced the transom,in 2009 I got the cut out pattern from Mercruiser.
Maybe that new cut out pattern had a spec for a lower mounting location for the out drive.

One of these days I'll have to put the replacement low profile anode on the outdrive.