P1 wiring BoSoZ

[2Bak]

I have a problem with BoSoZ and hoping for someone to help me out, so I can finish this exiting project and finally get to listen to it.

Since I'm so stupid on basic electronics I can't figure out what R18 221R are used for and how to wire P1 and R18 at +IN if I don't use P1?

The setup is this:
- Unbalanced only, no use of -IN and -OUT
- P4 master volume with 5K Elma stepped attenuator
- 10 K lin. pot as balance control before P4.
like here: http://2bak.homepage.dk/bal.gif
- no use of P1 and P5

Instead of P1 I put a 10K resistor.
1. I guess I wire the 10K resistor between +IN and ground on the PCB?
1. Where to put R18 resistor? Between my input selector and +IN on the PCB? What is R18 used for?
2. Do I need to short Z1 to R18?
What else to do at +IN if I don't use the pot?

Hoping for someone of you experts out there to bear with me.
I would really appriciate some help.

Thanks
/Jan

[2Bak]

Sorry, wrong forum.