I just bought a Black Finger, the newer version with two tubes. I have used it at home for two weeks, and absolutely fell in love with it. I took it to rehearsal for the first time last night, and after a couple of songs, it started making a crackly static kind of sound. We practice at my drummers house, and it is an old pier and beam with wood floors, so there were a lot of vibrations going on. I wiggled the tubes and got the noise to stop for a while, but then it came back. The question I have is whether this is being caused by the vibrations coming through the floor to my pedalboard, if this is normal for a pedal with a tube/tubes in it, and if there is anything I can do to keep it from happening. I love this pedal, but can't use it on a gig if this is going to be a problem. Most of the venues that we play have large wooden stages, which transmit vibrations as effectively as my drummers floor. And the problem will probably be worse, considering that our stage volume is louder than our rehearsal volume, and I move around a lot more when I am playing live than I do at rehearsal.