I think there is a mod, but I don’t know what it is. I’m looking to be able to use my Russian Black Big Muff (true bypass) with the Cry Baby Wah. Regardless of the Muff going first, or second, the wah is either totally lost or barely does the “Wah” thing. The GCB is totally stock, and works great with a regular dirt pedal (Like the DS-1). Any help is appreciated. Thanks! I’m still going through Stinkfoots website now, trying to educate myself a bit.