Thank you very much George Kaye and Scottyee for your reply but I'm afraid is not much to do from where I am now. I am European but curently I perform in China and I stil have 5 months to go! Is only God who can help me to finish this contract. I do like Yamaha as well, but I also like to play piano and there is no keyboard on the market with the XD3's features and hammer action keys. More than this, most of the overseas hotels that I work for already own electric pianos, and I need to carry only the module.
Thanks again my friends and GOOD LUCK!