Fuzz Face Bias

Hello,

my name is David, im new to this forum.
I just recently build myself a Fuzz Face using old components i salvaged from an old electrical organ.
I used two BC 209 C Silicon Transistors for my Fuzz.
I used the schematics i found here on this website
The only changes due to missing parts: i used a 470K A instead of the 500K A
and also i used a 22uF cap instead of a 20uF.
Other then that i followed to the plan.
My question now is: How do i bias the Circuit (do i calculate the resistors needed after measure? Or do i install pots, and if yes, where?) and what values should i aim for for my Bc 209 C's?
Should i go for the same Voltages the Ac128's need?
I hope my english isn't too awful so you understand what i mean.
Greetings from Germany
David