Even at 32, the Astros second baseman is elevating key aspects of his game to new heights. José Altuve is supposed to be trending downward. The 2017 AL MVP is on the wrong side of 30 and has been dealing with a nagging hamstring injury since April 20. The wear and tear of playing more than 1,500 games in the big leagues across 11-plus years is undoubtedly impacting him physically. But somehow, seemingly none of it has hampered Altuve’s ability to hit. The Astros’ stalwart at the keystone enters Tuesday with a slash line of .259/.351/.518 and has already slugged…