Hi, I just bought the Onkyo HT 780S, and I am replacing the speaker wire there with 16 gauge wire. I'm new to all of this, so my question is this: Once I strip the plastic off of the 16 gauge wire, should I twist all of the small copper wires together before putting it into the back of the speakers and the receiver, or is that something that should not be done? Also, how tight does the wire have to be to connect to the receiver using the knobs that you twist? Any thoughts here would be great! Thanks!