Long headshell required

Thanks again for everyone's advice

Yes, it's a Mk 2.  The calibration disc does not show the algorithm unfortunately,

I will try mounting the arm again and see if I can achieve the correct P2S distance.  If not, it will be time to get a different arm

What calibration disc?  For example, I think Mint protractors adhere to Baerwald.  Or if its the OEM Technics protractor, it is probably Stevenson.

Dear @koala  : "  it will be time to get a different arm.." or a different TT because the MK2 probably is the best tonearm ever made it, but is up to you.

R.