I have decided to start anew, strip out the old stock plinth and will definitely be utilisng an new plinth. I will ask all not to now suggest plinth builders. I have rethought the entire thing.
I am getting a Kuzma 4 point 14, because on the new plinth, the size of the platter will be the same. From everything I have read, a really good arm. I want it on my new plinth whatever I do.
This wiil be my last post in this thread. I know I shall purchase this particular arm. and i appreciate all who contributed. Sayonara from Koalaland.