Hi, Alice:
I recently adjusted the cable lengths on my Athena for the first time (I’ve had it a year) and found it to be very easy. This was all I needed to do to correct some minor intonation issues that were starting.
When you purchased your Camac, you should have been given a kit containing both an instruction manual, and all the tools necessary. If you didn’t, trying contacting whomever you purchased the harp from and seeing if you can get it. You can also go to the Camac Harps website and download and printout the regulation and care manual yourself. It has a complete listing of all the tools you need, and is printed in French and English.
Hope this helps,
Andy