Symetrix 104A or 108A telephone system

[Studio1]

I'm on the hunt for a copy of the service manual for these - I think the same manual applies to the 104A as it does to the 108A.

Symetrix claim to have no information any more for these.

I'd also like the multicore cable that joins the turret to the rack unit if anyone has one spare.
Will pay all costs for shipping etc.