Disklavier

> First, use the special pour acoustic foam from
> Markertek in New York (www.markertek.com).

A better foam product from a company that specializes in acoustic  
treatment is

  http://auralex.com/

There's more to treating an acoustic space than putting absorption ON  
your instrument. The area around it is more important. Do you have  
glass or ceramic tile in your room? Parallel walls? High ceiling with  
right angle corners?

Putting a bunch of MarkerFoam (which is actually a very mediocre  
product - I have used it for a studio installation a few years ago -  
and unless they've re-designed the formulation, it's nowhere near as  
good as some newer generation foam products) on your instrument will  
accomplish one thing- it will ruin the sound of your instrument. The  
goal is to have your instrument sound great, but not overwhelm the  
room that it's in.

I suggest reading up on some acoustic treatment -- it is NOT your  
piano that's the problem. It's the room that it's in.

More reading:

http://www.acoustics101.com/
http://www.silentsource.com/index.html