I live in Argentina and of course, cant replace mine here. So, I bought a piece of thick plastic, cut it to size, and mounted it. Worked like a charm. I also had it upholstered, but that in the end, is optional.
p.s.: if you have your centerboard handy, could you tell me the size of the diameter of the pivot hole for the metal mounting brackets. I need to have the brackets made and dont have the board with me now and need that measurement.