I presently use small rubber bands to keep three LGB 1500 series turnouts in a designated position. the weight of the train moves the points as it passes over them. However, the rubber bands only last two weeks on average. Fortunately, they were free. I wonder if there is a good spring for this purpose? I thought of ball point pen springs, but they rust and are not reliable. I could electrify them, but I want to keep it simple.