I found I needed quite some time to dial in the HT-Dual.
Maybe I have a bit of a reverse honeymoon period as I tend to be disappointed with stuff before coming round to the sound of them (My Ceramic Warpigs included).
I've got it sounding great now.
EDIT Was it a high - pitched feedback sound?
I get that on the red channel sometimes but I've got the hang of controlling it.
It was a feedback type of sound, but it wasn't that high-pitched, and it only happened when I had the wah engaged.
