so I have finally ordered my 18650 cells and BMS. Are there any best practices for cell voltage before I start stringing them together? should then be at a specific voltage range? I assume that voltages should all be pretty close since I ordered reputable cells from a reputable vendor. I am of course going to double check them first. I have read a couple of suggestions that the voltage difference is important before putting them in their groups. Is that the case and if so, what charge/charge difference should I ensure that they have?