For whom the Bell tolls Wah technique

[Headbanger]

Hi, I have a concert in 5 days, I will play For whom the Bell tolls, but I don't know how to press the wah pedal correctly for the Cliff Burton's tone.
I have a Big Muff PI and a Morley PBA-2.

[carlos840]

not an expert but listening to it it sounds he just follows the notes hes playing...

[Travis_Bass]

I prefer to do the wah that jason did during the black album era. http://www.youtube.com/watch?v=UL5FcW6JrGI