The phonocable should be 'dressed' in such a way that the free movement of the arm + arm board is insured. This is 'the point' of the SP 12 suspension construction. Even with the P clip (Stanwal) you should be careful with 'dressing' (loos) the cable. There is alas no other way then to put the TT on a table such that you can observe the movment from below. I got hernia btw from adjusting those damn springs from below.
Regards,
Regards,