Hi, first time poster here. I plug my shuriken into the helix. when using a distorted preset such as the panama, and the shuriken is set to octave, I notice a high pitched plinking/high note noise when palm muting the 4th string the open D. No matter how I palm mute, where I put my palm, I hear it very loudly. The actual note is hidden behind the high note plinking. When I palm mute the other strings in this same setting, the octave down note comes out clearly. Its just mainly this open D string. as soon as I fret a note on the D string, it seems to work fine. Does anyone else notice this?