Just been rebalancing my tonearm after moving the turntable. This might sound silly or be completely normal but when it's balanced, if I bump it up or down slightly to check if it'll still balance when it settles, it's resting slightly lower than when I first set it. Is this normal if I bump the arm up and down to see if it'll go back to the same height? It's still floating but ever so slightly lower. Maybe just testing it too heavy?