Help problem of resistance to surf PI

[mike.cherbourg]

Hello, I realize now my first detector based on IP kit surfing PI 1.2 but I have a problem to place two resistors. A shema me that R22 = 100k and R18 = 47k and and other investment shema says the opposite,
what is the right cinfiguration please
thank you for your help and congratulation for this very good forum
(sorry for my english)

[Tepco]

R22 is 100K, (between pin 2 & 1 of U3A) R18 is 47K, (-V to threshold pot), good luck whit this project.