When Coolant gets mixed up with the oil, it gets to the base , solenoids, check valves etc. At this point the machine becomes un predictable. It needs to be completely cleaned out. We like to go all the way. Each and every spool of solenoid need to be cleaned out.  Every pressure valve need to be inspected.

ALL REBUILDS ARE NOT THE SAME.

B axis does not need go to Switzerland for rebuild at a cost of 65K.