Shallco step attenuator questions.

I have this Shallco 47 positions switch for a long time but haven't got chance to really build it. My plan is to make a 100K series stereo unit, basing on the parts list provided by Michael Percy.

Since this is my very first time fooling with this switch, I'm a bit confused about some points, hopefully smart guys here could lighten me.

So I count 47 positions in total but according to the list there are only 45 steps, with last resistor ending at 44-45 positions. Does that mean I'll just leave out the last 46-47 positions on the switch unsoldered?

Also, are these photos below the correct way to solder the resistors in series configuration? I found some photos on Google but most of them were in ladder and required a ground ring.

Thank you!