did you try just swapping the replaceable parts from one of the good sscs to this one? (pic, and 485)
also, the trace has been cut on one side of the board, which i believe uses a different jumper wire soldering on the bottom side, right?
your resistor choice, and trace cut, all match of my v1 to v3 mods (the one now in the wiki), but it was the one where we ran a wire from the data line to a pin on the pic.