The phone number in the U.S. is 888-892-6242 (option #1). I asked about reed plates for the P32D:
Part #’s..backordered 4-6 weeks from the time you order.
W4040221..low reed plate P32D..$24.28
W4040231..high reed plate P32D..$24.28
There appear to also be delivery charges, though probably not if you can order through a dealer with a Yamaha account.