I have the Sea Devil from 1970. Getting it cleaned up. When I start a game turning the periscope left and right the torpedo arm remains in the center position. Both the left and right position contacts remain closed. When I fire a torpedo with the trigger button the torpedo arm with move to where I am aiming the periscope. Once the torpedo reaches the end, hitting the boat or not, the torpedo arm returns to the center and remains there until I fire again. I thought the torpedo arm was supposed to move left and right when I move the periscope regardless of whether a torpedo has been fired or not. Am I wrong? Is my machine operating correctly or do I need to work on fixing this?