Run 4 Degauss
Switch Closed PTF      Switch Open PTF Midle         Chamfer Edge
        (G)			(G)
      -2.2 			-0.6	 		-0.5
      -2.2 			-0.3	 		-0.2
      -2.2 			-0.5	 	        -0.4
      -2.2 			-0.4	 		-0.3