WTB Yamaha PX-3 heavy tone arm weights

[BillWojo]

Looking for the heavy counter weights that came with every PX-3. They screw into the rectangular counter weight in place of the little screws. I would make some but the thread size is not a standard size. It's metric for sure but not a standard pitch.
Might be interested in a whole PX-3 parts machine as well.
Thanks

BillWojo