Dumb soldering questions, refer to picture below.... 1. Both volume pots, the post on the right where it is bent back towards the case of the pot with a glob of solder.... does the post have to actually touch the case itself or will the solder be enough if it's touching both? 2. I've also seen it where someone used a piece of wire and soldered the wire to the post... is that a "preferred" way of doing it or just personal preference? 3. Speaking of wire, again referring to the picture below, there is a black line going from the right most pot on each volume pot, you do solder a wire from pot to pot, in other words, that black line should be a black wire, correct? Thanks!