Newly crowned women's 800 m national champion Rin Kubo, 16, anchored one of two 4x800 m teams from Higashi Osaka Keiai H.S. at a time trial meet in Higashi Osaka Friday, setting a new Japanese NR of 8:33.77. The team, which included Rin Kitamura, Runa Asano, Misa Tamura and Kubo, took 8 seconds off the old record, clocking individual splits of 2:07.4 for Kitamura, 2:11.2 for Asano, 2:13.1 for