Carson High’s softball team is showing a flair for the dramatic — at least at home. For the second consecutive home game, an underclassman came up with a walk-off hit to win the game for the Senators. Last week against McQueen, it was Bailey Allen’s double. This time it was sophomore Michelle Perry doing the damage. Perry smacked a two-run homer with two outs in the bottom of the eighth to snap a 3-all tie and give Carson a 5-3 victory over North Valleys Tuesday afternoon in a Division I cross-over game. After getting 10-runned by Damonte Ranch twice on …