rotary band switch cables for Pioneer A-80

Hello, I'm new here on the forum. Let me introduce myself, my name is Rosario, I'm a 33 year old Italian guy.
Since I was a child I have had a passion for hi-fi, especially for vintage hi-fi. I bought a Pioneer A-80 amplifier, unfortunately it has a broken mechanical cable that acts on the speaker selector (speaker selector off A B A+B); after several failed repair attempts, I give up... Can you help me on where to find this spare part? They were often similar, if not the same, on many amplifiers of the time, but the length certainly changes. I've already seen that they've talked about it in this thread, but I don't know if it solved the problem. Thanks in advance 🙂

 

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