LOS ANGELES — Now it’s a series. Now, the home-field advantage flips. Now, the pressure shifts. Now, an intriguing whiff of possibility lingers in the air. Now, things get edge-of-seat interesting. The Padres macheted through Hall-bound pitcher Clayton Kershaw, Dodgers home runs in each of the first three innings, a see-sawing stretch of lead-tied-trailing-leading-tied again before the dawn of the fourth inning Wednesday to win wild, critical Game 2 of the NL Division Series 5-3 at Dodger Stadium. Instead of digging out of a hole the size of Lake Baikal, the Padres evened things with two of po…