Colorsound wah with fuzz, issue

[fuzzo]

Hi folks

A guy asked me to add a fuzz circuit in his wah colorsound .  Both work good but absolutely not together. A  kind of oscillation and noise appear . Like I read somewhere (and I did in my crybaby) I put a JFET buffer (the one presents by fuzzcentral) but even with that , it doesn't work .

I tried the circuit with my Snarlind dog wah and my crybaby , it works perfectely .


Someone knows why this Colorsound wah-Swell (blue model) doesn't like a fuzz after it.  ? how make to solve the issue ? 

[Fishface]

Tried the fuzz in front? Had  Coloursound wah back in the 70's which with a homemade fuzz in front - oh how I wish I could recreate that sound!

[ericohman]

Do you have a schematic for the Colorsound Fuzz Wah?

It's seems like it can be bought here:
http://www.ronsound.com/index.php?main_page=product_info&products_id=410

I have a blue Colorsound Fuzz Wah (from 1974 IIRC) but it's got a scratchy pot for the "wah" which I need to replace.