Roland JP-8080 PWB Holder

Acquired a dead JP-8080 that had seen better days. Almost have it back to 100%, but having trouble finding replacement part number 01458745 - PWB HOLDER. It looks like three small pieces that prevent the bottom circuit board from flopping around and shorting against the top circuit board or chassis.

Looks like a part unique to this model. Any thoughts on where to find this, or recommended workarounds?