voodoolab pedal power+pedaltrain+wah=yucky hum

[jonathan perez]

i notice that when my wah is on my Pedal Train, it produces alot of hum in the heel down position. but when i take it off, which is only MMs away, no hum. whats the deal? my power supply is a voodoo lab pedal power 2. im using batteries for my wah right now. anyways, how can i get rid of the hum?

[LyleCaldwell]

Is the bottom plate on the wah?

[jonathan perez]

yes sir, the bottom plate is on the wah?