nope nope nope. manual points are for a machine that is used regularly. If yours has set for a decade or three, it need much more oiling. take it off the base or out of the cabinet, turn it upside down. left side right side take the faceplate off and oil every place steel rubs against steel.... And the good new. MG stands for magnesium. It was made lighter to compete with Singer featherweights. without the MG they are cast Iron and much heavier. You are unlikely to hurt it. Have fun.