Marble Run - How do I Keep the Ball Close to the Floor?

Hello! Just starting the Unreal Blueprints course and one gameplay issue in Marble Run not addressed was how to keep the ball close to the floor. As it stands, tilting the level can drop the floor out from under the ba and leave it hanging mid-air, which is definitely not a feature I was intending. Is there any way to lock it to the floor while still allowing rolling?