I recently ordered an extra piston for my bike after accidentally destroying one of my pair. I ordered using the same model number, and while close, this piston I received isn't exactly identical. While both pistons are the same height, and diameter, the new piston is has a slightly taller part where it is a complete cylinder, before the bulge on top. There is only less than a mm difference. My question is, does it matter? Or am I fine to put it in the bike as is?