Do you realize springs are detrimental to the sport of scuba diving ! Yes , yes indeed they are way cool in this divers life. . A electronic regulator sounds like crap to me so give me a hoot for the spring regulator that are working very fine . We have extension and compression springs and torsion type too , the list is long to name a few . Life is sweet for you and me with springs making a soft ride with the cars we drive . I have personal knowledge of springs and perfected the art of custom one off kind . A jewellery oven and a jig or two , having made over the top double torsion springs for propulsive devises of mine . " Peace and harmony " Rumdumb