Wah Q control, need help please

[SMellmo]

hi there everyone !

I have a Dunlop GCB-95 and I want to add a "Q control" potentiometer to it.
I have found some "wah mods" websites that explain how to do it. I tried but basicaly, nothing changed: the sound stayed the same !

Here's what I did:
I installed a 100k linear pot in serie with the 33k resistor in parallel with the inductor so i can tweak ohm value.  

i get no change in the sound and even if i disconnect the pot AND the 33k resistor, nothing special happen !

i really don't understand what i am doing wrong, there is nothing complicated with this project....  

and yes, the pot is wired correctly, i current enters the middle lug and goes out on a side lug.

the resistor is not dead . i get 33k when i test it with the multimeter.

HELP !     :oops: