Evening all. Along with a few MXR pedals, I have an Ashdown Drive plus pedal on my board. I don't have and am looking for a chorus pedal. An Ashdown pedal has come up locally and I can probably get it for 30€ (£25/$45 roughly). The problem, the Drive plus pedal I have has some great sounds and is very usable but the moment you turn it on, hissssssssssssssssss. Once you're playing completely unnoticeable but it's there. So, the chorus pedal? Can anyone suggest an easy fix? Is this a grounding issue? Any advice very welcome. It seems so silly that ashdown built the outside of the pedal like tanks and the inside like crap. Thanks!