CNC machine: Servo went out, and was replaced. Still having problems, encoder cable, and drive replaced. Motor runs and faults. Amps go from 8 to 26 on the fault. We thought mechanical, and binding, but removed and tested, still showed erratic current at some point, and faulting. Swapped drives, and motors with the Y axes. Problem stays at X. Swapped cable connections at the board, and both X and Y work. But the problem didn't swap ? WTH?