steve,is that a 4-stroke motor???i have had the control king on the boat for 2 years now.the control dial started to "act up" at the end of this season,when you go to adjust the dial the rpms jump up and down,making it tough to get speed right.i have not called the company yet to see if it can be fixed.also,dont try to cut corners like f.t. said,the guy who installed mine,took 12 volt power from the starter solinoid on the motor and when you tried to raise engine rpms it would make the servo motor go crazy,so make sure you run power wires to your battery.