Psr-1500 repair parts

I’m searching for pitch bend/modulation wheels, and a pitch bend circuit board for a Yamaha PSR-1500.

Wheels part # VY750800
Circuit Board part # WB856200

Can someone point me in the right direction?

The wheel is this part:

The circuit board is not a part that we stock, but we can special order it for you; the cost is $24.95. If you would like to do this, please email to set this up.