As for soldering the cups on the db37, this is what I came up with..

I had some old TV coax cable laying around, and found out that the center copper conductor in the coax, was a perfect fit to go inside the solder cup. I cut about a 1/4" or so long piece for each solder cup, then soldered that to the db37 cup, then tinned the end of the wire, then heated up the connection at the solder cup, and it flows right onto the small piece of coax wire. I then used the proper size heat shrink tubing to insulate each wire/solder cup. It worked really well. You prob only need like 12" at most(and have some left over) of that cable for a complete db37 connector. It made solering the wires to the cups, MUCH easier.