Etherwave Theramin Kit tuning/manual?

Hello! Some years ago I was gifted an Etherwave Theramin kit that someone else built. Originally everything seemed fine, I was making progress learning to play, but a friend took it upon themselves to open it up and tune it, and it's never been the same since. Life happened and I never got around to trying to fix it until now.

I have been having trouble pulling up the manual to the kit to check that everything is as expected and then tune it up. Might anyone here have one? I keep finding pages and things that reference it, but not the manual itself.

Also open to any other tips/tricks/advice.

I recently bought an Etherwave Standard - it should be delivered next week! And I too was curious how it works, so I searched for the manual and did find the PDF available for download. Is this what you're looking for? https://api.moogmusic.com/sites/default/files/2022-04/Etherwave-Theremin_Manual_2022.pdf

edit: actually that's for the plus, I need one for the standard. I do wonder if it's out there. If I find it I'll update here.

Here is all I have about my Eterwave Standard :

https://u.pcloud.link/publink/show?code=kZPG9J5ZBNnLNjrWaDV9X2lJaWVK1HCeyLWy