I just picked up a used Juno. I have had for awhile a kurzweil k2500 XS with kdfx. So my issue is this, I have never played a musical instrument and started taking piano lessons. The 2500 when set to a grand piano sounds like what I have my lesson on which is a real piano. The DS88 when using the same setting for a grand piano just doesn't sound like one. I have done a factory reset on the Juno and still no sound change. It appears to be working as when I change to keyboard/organ or other instrument bank it does change the sound. It just seems the piano sound is not clean. Any advice?