Have a 1991 40hp Evinrude trim/tilt engine that the throttle cable sticks on the motor. I've syn-link by the service book. When I throttle back on the control box the motor remains at fast rpm and will not return to idle at one point the motor would not shut of with key removed as well as the kill switched pulled, had to flood out motor to get it to stop. I've disconnected the cable from the engine and tried to move by hand it moves a little hard and will not return to normal position. Made all kinds of adjustment and it still sticks. Motor runs great at full throttle but has problem when you pull back to neutral it stays at high rpms.