I bought a battery from Murph and when I installed it, I didn't use the 1/2" spacer at the bottom of the battery. I don't see the battery on Murphs currently, but it was shorter than the OEM. I installed it without it, because it didn't want to fit easily, so I figured I wasn't supposed to use it. It wasn't until I put the OEM in the new battery's box, that things started to fall into place in my head. Should I go back in and put the spacer in?