1980 chris craft, chevy350 alpha1 od: This boat has a "Morse" side mount remote controller with a lift button under the handle. The guy I got it from and I had the motor running in his driveway and did a few shift cycles, but I was behind the boat and did not see what he did. Now he is too sick to explain how it works. Do you have to lift the button to shift/thottle, or is the button supposed to release the controller for throttle only? It is very hard to move, and does not "release" when the button is pressed. Does it only work when the engine is running?