adapter plate jelco sa-370h tone arm technics sl 1200mkIII install


I have purchased a Jelco sa-370 & need to mount on a Technics SL 1200 mkIII does any one know where to find an adapter plate for this tone arm or do I just use original Technics adapter plate? do people fabricate these?
arruda74
According to this website, the Jelco SA-370h doesn't have the same mount as the current 750 series. I've found plates for the 750 series but so far, not for the SA-370h.
I have tried KAB, Isonoe who don't don't make adapter plates for this model any one of a custom metal fabrication company who can do this
Does it have to be metal?  Get a round piece of wood and drill holes?  How about an acrylic disc?  Those can be laser cut at a plastics fab place.