Can't help with service, but have a machine for sale.
What size and vintage are your models?
I'm not too good with the OKK numbers.
Have an ten ton beast retrofitted with a Bosch CNC.
Good strong machine.
8 tool turrett - ISO40
7HP servos. (originally fanuc CNC)
Accessory: Full length Tilt Table
Tool changer servicaeable, but not used. 8 tools enough.