Thanks David & thanks for the book... it arrived very safely
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I found that the material on the TK23 is not at all brittle, compared to the TK20 shell, which is similar to a cracker in strength! I was indeed lucky to find the TK23 and as I’m not really into 1/4 track I have it to my friend for parts. I guess boot sales are places to search for these vintage machines.
I finished restoring it but found that the speed slows down in playback after some time and I’m thinking that it’s the 1.2uf motor cap. I have put a temporary cap made up of two values put together in parallel, one of which is new but the other came from a Revox G36 (a 0.5uf cap that was stuck to the original cap for some reason). I’m suspicious of it and have now ordered a 1.2uf cap and will fit it and see what happens. I don’t want to stress the motor in case that old cap is leaky when it gets going.
Cheers
Carmine