This PCB adapts 9mm pots with 6.35mm shafts to a CTS plastic shaft pot footprint.

They can can be used with the 207, 257, 259 and 292c.

For example, the 207 and 292c would each use 4 of these adapters and the 257 would use 6 of them.

Note: the product for sale is the small PCB only, the potentiometer is not included.