I finally cancelled my purchase, because I found out that like an idiot, I had the difficulty switch on difficult, and it was messing up some of my games. And for the Harmony, I realized that the software I used to update its BIOS was ''badly'' installed, so I reinstalled it, reflashed it, and it works like a charm now. The only problem that I still have now is that a few games (like Pitfall, Chopper Command and Towering Inferno) are only in black and white. My switch is probably the problem since it does not work whenever I use it.
(Oh, and I opened my Vader and it already had a socket in it, by the way, haha)