NEW YORK — Easy Money Sniper? More like Easy Money Under. For the second consecutive time following consecutive poor performances from superstar scorer Kevin Durant, Nets head coach Steve Nash vowed to make adjustments without revealing what those adjustments entailed. And for a third game in a row, Durant struggled against the physicality, length and creativity of a Celtics’ defense that’s had every answer to the test of KD and swallowed the Nets to take an 3-0 series lead with a 109-103 victory at Barclays Center — an arena that sounded more like Boston’s TD Garden with Celtics fans that flo…
