I just got a Pianophonic. I am experiencing sound problems with some of the presets. On the factory SDCard set I am getting distortion and clicking on presets 2, 4, 6, 7 and 8. This is most noticeable in the range of the Attack control between 10 o'clock and 2 o'clock. There is sometimes a clicking that occurs during the transition between the hammer and wavetable sections. I downloaded the Piano_XL set of presets and put them on a brand new high-quality Sandisk SDCard and they all play nicely except #12 and 13 Felt Piano which are clearly distorted. I am driving the module from MIDI. And I have found no settings that eliminate the distortion or clicking. Also sometimes presets fail to load when I select them with the numbered Part Selector. I just get rapid flashing of the Trigger button and no sound. Sometimes selecting another preset solves the problem. Sometimes a power cycle is required. I updated the firmware to v0.7.19 via USB cable, but I don't know how to confirm what version is on the module. Could there be a problem with my module?