Disklavier

Does anyone have any good ideas for cleaning a high gloss disklavier.  I have 
a DC3Pro and have been using a piano polish.  I use Pledge Grab-It's for 
in-between dusting.  But now the polish seems to be building up.  A friend 
suggested that I try Murphy's Wood Soap.  Has anyone use this and how were 
your results.  The Pledge Grab-It's work great because they are antistatic.  
Interested in your input.

Bil