This may sound funny, but is there any way to "tighten" the steering tension on the single arm hydraulic to make it "harder" to turn the wheel? I like mine to be somewhat tight and this one is very easy to turn.

thanx

If it's a pressurized system, you can find out if it's acceptable to change the oil viscosity and/or the air pressure.

Is it a FULL system? If it's an add-on you are still at the mercy of the stock merc stuff inside the boat.

How do you tell if it's a full or add on?

A full system has hydraulic lines going to a helm unit behind the dash.

An add-on system ties the external ram into the merc steering unit on the transom assembly. From there, there is a steering cable that goes to the helm.

Based on the symptom you described above, It sounds like you have an add-on system.