4 мотора на ось Z - не могу настроить

Вот мой конфиг (его часть без концевиков и нагрева)

; Configuration file for BTT Octopus Pro v1.0 F429 (firmware version 3)

; executed by the firmware on start-up

;

; generated by RepRapFirmware Configuration Tool v3.4.0-LPC-STM32+2 on Wed Jun 15 2022 12:54:54 GMT+0300 (Москва, стандартное время)

; General preferences

G90 ; send absolute coordinates...

M83 ; ...but relative extruder moves

M550 P"My Printer" ; set printer name

M669 K1 ; select CoreXY mode

; Network

M552 S0 ; disable network

; Drives

M569 P0 S1 ; physical drive 0 goes forwards using default driver timings

M569 P1 S1 ; physical drive 1 goes forwards using default driver timings

M569 P2 S1 ; physical drive 2 goes forwards using default driver timings

M569 P3 S0 ; physical drive 3 goes forwards using default driver timings

M569 P4 S1 ; physical drive 3 goes forwards using default driver timings

M569 P5 S0 ; physical drive 3 goes forwards using default driver timings

M569 P6 S1 ; physical drive 3 goes forwards using default driver timings

M584 X0 Y1 Z2:3:4:5 E6 ; set drive mapping

;-- Z drive positions -----------------------------------------------------------------------------

M671 X-72.0:-72.0:400.0:400.0 Y-10.0:410.0:411.0:-10.0 S10

M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation

M92 X80.00 Y80.00 Z400.00 E420.00 ; set steps per mm

M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)

M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)

M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)

M906 X800 Y800 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent

M84 S30 ; Set idle timeout

Работают только моторы 4 и 5. 

Перетыканием проверял - моторы, кабеля, драйвера - исправны.

Ну и еще один симптом - когда пытаюсь делать хоминг по X и Y - тоже крутятся моторы 4 и 5.  Движки A и B молчат.

еще из файла board.txt

board = biqoctopuspro_1.0; 

//LED blinks to indicate Platform is spinning or other diagnostic 

//Comment out or set to NoPin if not wanted.

leds.diagnostic = A.13; 

heat.tempSensePins = {bedtemp,e0temp}; //Max of 3 entries

//heat.spiTempSensorCSPins = { }; //Max of 2 entries

//TMC Smart Drivers

stepper.numSmartDrivers = 4;

//TMC 5160 Drivers

stepper.num5160Drivers = 4;

stepper.spiChannel = 0;