when i use thru-0, it seems like the waveform is acting weird. i have it set to sine and when it gets to the point where it sweeps over the top it begins to go back, but then sweeps over the top again before modulating all the way in the opposite direction, So in other words, it does the same thing with triangle waveform as well, but doesn't seem to do it with other flanger types. i'm running in mono as well. thanks for any input.