How to replace a variable resistor/analogue stick with a steady resistor?

A razor onza controller got bad and the analogue sticks always pointed down. So I got the controller torn down to use as a sacreficed pcb (in combination with a MC Cthulhu and Impv2 chip as a catch-all arcade controller).

But after ordering the heaviest resistor to block all signals and finding out that replacing a variable resistor with a steady one doesn't work like that. I know that it has three holes and I need to measure the resistance in Ohms.. But I got no clue how to take it from there, or should I listen to slagcoin and use a 5k or 10k resistor?

 

Why not use another potentiometer? You could use a skeleton pot if you don't need to be able to adjust it. Or you could replace the pot properly and have a working controller again

 

I needed a sacrefuced 360 controller which Im going to use with a MC Cthulhu for bascically all console support . I just put in 5k resistors and it works fine. I checked it in windows devices and the joystick is setting perfectly to neutral.

I will post my arcade stick once it is completed, you guys taught me alot .