ISO FG 230 TUNERS OR A SINGLE TUNER GEAR

Hi all, my name is Bobby and I am new hear. I recently purchased what appears to be a late 60's FG230 12 String. It is in really great shape with the exception that one of the tuners has a blown out gear. Overall the tuners are a bit rough, it appears they were dirty and some speci soul used pliers to turn them, but they all function with the exception of the G string. If anyone has a line on a replacement set or even just the single gear please reach out to me.

Thanks
Bobby