Hi Tin30 I would be inclined to experiment with different capacitors, or even without i.e. if there is a cap attached (Usually to the volume pot)just snip one of the cap legs off at the pot end, you can always solder it back on then if you want, Don't be concerned there is no electric current at this point and you can't damage the guitar.
Here are two sites that may help you to understand the principlw
http://www.premierguitar.com/Magazine/Issue/2008/Mar/
Auditioning_Tone_Capacitors.aspx
http://www.300guitars.com/articles/guitar-tone-caps/
Regards Fenderphil