Which one are you using?

Try the ClassicPiano. As far as I can tell from demos, it's the one from the G70. But it sounds as if it needs the filter opened up a bit. Try adding some small positive values to the cutoff parameter (maybe between +5 and +10)

One thing to bear in mind is... go play a real piano. Unfortunately, most arranger manufacturers force us to use a very bright, brittle sound (especially Yamaha), which after a while you simply get used to, and assume it's SUPPOSED to be like that. It is not! Sure, you want some sparkle when you open it up on them, but warmth and detail is important at low and mid velocities, IMO.

Two things to do... First try using the Recorder to 'capture' a recording of you playing the piano, then play it back on good speakers (not the built-ins). Sit back, relax, and ask yourself does it sound like a REAL piano?

It may take a while to get used to the less 'hyped' piano sound, but trust me.. I've been using the G70's piano on first call sessions to everybody's satisfaction - and we even have a Steinway in the studio! Once you start to compare it to the real thing, and not the others' brittle, 'cut at any cost' offerings, hopefully it will start to grow on you