Ok. I've been doing some research on capacitors and i've learned that it's important to determine the outside foil end of each cap and be sure to connect it to ground. Has anyone done this? Also, is there a good, reliable way to do this without having to build my own outside foil end testing box? it seems like a daunting task to build a box to do this or maybe it's not important to do it at all? Thanks in advance.