Don’t expect to see any Texas Rangers players launch a campaign for a repeat of the longest spring training in club history. As nice as it is in February and March in Surprise, Ariz., nothing there can make a player want to push back the start of the regular season. The players, though, knew that they needed to try to make the most of the seemingly endless Cactus League schedule, which was stretched out because of the World Baseball Classic. The extra time gave Lance Berkman time to build strength in his achy right knee and Adrian Beltre time to take it easy on what has become a curiously timed calf strain each spring. Also count Ian Kinsler among those who took advantage of the schedule, though he didn’t have anything ailing him physically. His swing, though, was suffering some. He had kinks he wanted to iron out of it, kinks he doesn’t like to discuss but kinks nonetheless, and he knew the additional time could have his swing where he wanted it by Opening Day. Through the six weeks of the 2013 season, the extra work is paying off. Kinsler enters the opener of a three-game weekend series at Houston as the Rangers’ leading hitter among everyday players, and he has been their best offensive player. The goal now is for Kinsler to maintain his hot start over the rest of the season. “Routine has a lot to do with it, but a lot of it is mentality,” Kinsler said. “You have to keep the same mentality every day. You can’t let your guard down at any point, and that’s the tough part because we play every day.”