Hey there. I own a vmk 188 midi keyboard and i am facing some problems during the last months. While i am playing, the middle C,D notes are always heard louder than the others. Its like knocking these notes with all my power without doing it. Furthermore sometimes the middle D note is totally inaudible. I curently use acoustik piano, EWQL Platinum and Hypersonic. I am desperately looking for your advices......
