[@knowltonjayne]

If you’re having difficulty sourcing some of the parts, here are alternatives from Digikey:

* **Switch**: SS-01GLP Omron Electronics Inc-EMC Div — https://www.digikey.ca/short/zj7zc8
* **Audio socket**: 35RAPC2AV Switchcraft Inc. | Connectors, Interconnects | DigiKey — https://www.digikey.ca/en/products/detail/switchcraft-inc/35RAPC2AV/772080

(Digikey Canada are out of stock with the spec items and are on 12+ week delivery)

The switch I listed includes a lever which will have to be removed. This is easily done by gently squeezing it from the sides with needle-nose pliers