I have a Mercury Optimax 150 big tiller on my sled. It has the hydraulic connectors on the tiller arm, but nothing else. On long days my arm is getting tired so I’d like to hook up the hydraulic steering. Is there a kit for this? Either after market or OEM is fine as long as it’s reliable. Again, I don’t need the tiller arm itself, but everything else that goes with it. Thanks for any help.