Changing the blades he attaches to his figure skating boots made all the difference for Japan’s Shoma Uno, who is aiming to go one better than his Pyeongchang silver medal at the upcoming Beijing Winter Olympics. Since he started using the made-in-Japan “Kozuka Blades” in recent years, the 24-year-old has seen a significant improvement in performance which has given him the extra boost of confidence he needed to include five quadruple jumps in his free skate this season. Like most sporting equipment, figure skates are designed to cater to a range of skill levels, with a skater who attempts tri…