independent Z motors bed leveling not working anymore

[nick9one1]

At some point my independent bed leveling seems to have stopped working. It has worked in the past so I know the hardware is wired correctly.

the image below is after running this;

M561 ; clear any bed transform

G28 ; home

G30 P0 X5 Y155 Z-99999 ; probe near a leadscrew
G30 P1 X300 Y45 Z-99999 ; probe near a leadscrew ;
G30 P2 X300 Y239 Z-99999 S3 ; probe near a leadscrew and calibrate 3 motors

G29  ; probe the bed and enable compensation

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Wed Jun 02 2021 18:38:31 GMT+0800 (中国标准时间)

; General preferences

G90                                              ; send absolute coordinates...
M83                                              ; ...but relative extruder moves
M550 P"BLV mgn Cube"                		     ; set printer name
M669 K1                                          ; select CoreXY mode

; Network
M552 S1                                          ; enable network
M586 P0 S1                                       ; enable HTTP
M586 P1 S0                                       ; disable FTP
M586 P2 S0                                       ; disable Telnet

G4 S1   										 ;wait for expansion boards to start

; Drives
M569 P0.0 S0 D2                                  ; X motor runs forwards
M569 P0.1 S1 D2                                  ; Y motor runs forwards
M569 P0.2 S1 D2                                  ; physical drive 0.2 goes backwards
M569 P0.3 S1 D2                                  ; physical drive 0.2 goes backwards
M569 P0.4 S1 D2                                  ; physical drive 0.2 goes backwards
M569 P121.0 S1 D2                                ; physical drive 121.0 goes backwards
M584 X0.0 Y0.1 Z0.2:0.3:0.4 E121.0               ; set drive mapping
M350 X16 Y16 Z16 E16 I1                          ; configure microstepping with interpolation
M92 X200.00 Y200.00 Z3200.00 E700                ; set steps per mm
M566 X600.00 Y600.00 Z150.00 E3000.00            ; set maximum instantaneous speed changes (mm/min) - increased Z and E
M203 X20000.00 Y20000.00 Z2000.00 E6000.00       ; set maximum speeds (mm/min) - increased E
M201 X3000.00 Y3000.00 Z200.00 E5000.00          ; set accelerations (mm/s^2)
M906 X1600 Y1600 Z1000 E800 I30                  ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                          ; Set idle timeout

; Axis Limits
M208 X-3:305 Y0:305 Z0.0:500.0 

; Endstops
M574 X1 S1 P"121.io1.in"                         ; configure active-high endstop for low end on X via pin io0.in
M574 Y2 S1 P"io6.in"                             ; configure active-high endstop for HIGH end on Y via pin io6.in
M564 H1											 ; allow jog without homing

; Z-Probe
M950 S0 C"^121.io0.out"                          ; create servo pin 0 for BLTouch
M558 P9 C"^121.io0.in" H3 F120 T10000            ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y66 Z2                            ; set Z probe trigger value, offset and trigger height (Z2.30)
M557 X-10:293 Y65:300 P8                       	 ; define mesh grid

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B3950     ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                               ; create bed heater output on out0 and map it to sensor 0
M307 H0 R0.291 C1127.4 D26.90 S1.00				 ; Set PID for bed values
M140 H0                                          ; map heated bed to heater 0
M143 H0 S100                                     ; set temperature limit for heater 0 to 100C

M308 S1 P"121.temp0" Y"thermistor" T100000 B4725 C7.06e-8 	; configure sensor 1 as thermistor on pin 121.temp0
M950 H1 C"121.out0" T1                           			; create nozzle heater output on 121.out0 and map it to sensor 1
M307 H1 B0 R3.089 C258.2:154.4 D5.95 S1.00 V23.7 			; Set PID for hotend values
M143 H1 S280                                     			; set temperature limit for heater 1 to 280C

; Fans
M950 F0 C"121.out2" Q80                          ; create hotend fan 0 on pin toolboard out1 and set its frequency
M106 P0 S0 H1 T45 C"Hotend Fan"                  ; set fan 0 value. Thermostatic control is turned on
M950 F1 C"121.out1" Q250                         ; create cooling fan 1 on pin toolboard out1 and set its frequency
M106 P1 S0 H-1 B1 C"Part Cooling Fan"            ; set fan 1 value. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F1   					 			 ; define tool 0
G10 P0 X0 Y0 Z0 								 ; set tool 0 axis offsets
G10 P0 R0 S0 									 ; set initial tool 0 active and standby temperatures to 0C
;
M563 P1 D0 H1 F1 						  		 ; define tool 1
G10 P1 X0 Y0 Z0 								 ; set tool 1 axis offsets
G10 P1 R0 S0 									 ; set initial tool 1 active and standby temperatures to 0C

; Custom settings
M564 H0                                   	   	 ; Let the Jog buttons work blv: added to allow jog buttons
M575 P1 B57600 S1								 ; Connection to  PanelDue
M955 P121.0 I10									 ; Accelerometer 

; Pressure advance
M572 D0 S0.12

; Miscellaneous
M911 S21 R22 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

[nick9one1]

Problem solved. Somehow M671 had been removed from config.g

M671 X0:290:290 Y155:62:255 S3 		 		     ; leadscrews at rear left, front middle and rear right