India’s liquefied natural gas importers are holding up some deals spanning decades as they push to lock in cheaper prices, hoping that a surge in supply will tilt negotiations in their favor.Major buyers including Gail India Ltd. and Bharat Petroleum Corp. have been pushing for lower prices and more flexible long-term contracts, leaving discussions with LNG producers stalled for more than a year, according to people familiar with the matter. That approach could be rewarded if prices drop as new projects fr ...