The PCBs turned up, but once built, the four DIP switches, since they are paralleled up, actually work together. A stupid mistake on my part! I am using one in place of the original prototype but have since redesigned the board to only have one DIP switch on board and to do the programming completely in memory. This will be a challenge for me (and Russ) but its doable. The new board includes tact switches for both 'Program' and 'Test' and an LED to indicate successful programming and actuations.