Re: stiff steering
If it is hard at idle, it probably have a no-feedback type of steering system. The main advantage being that, when you troll, the boat won't change direction if you remove your hands fron the steering.
With a simple regular cable system like i have on my Merc 60hp 2-strokes, it's very soft at idle, then it steer like crazy to starboard from 1500 to 2500 rpm and, past 3000 rpm, i can remove my hands from the wheel and it goes straigth ahead.