Originally Posted by bongomania
^^^ That's right. Strip the situation down to one piece at a time. If each one piece works fine by itself, then add a second piece and see if anything goes wrong.
I would leave the noise gate off of the pedalboard entirely until you have determined exactly what is causing the noise.
...oh, couple more things:
*Keep the stuff out of the amp's FX loop.
*The WTDI uses something like a 12-18v AC
power source. A conventional one-spot (DC) is not compatible.