Hello Roxy,

-- 1 --
No photo, because I achieved to print well your bed leveling test object.

To do this I had to :
Find the new realy good value for 'Z probe offset' because of the new servo.
Set the XYjerk to 1 (10 before), because the PLA was not glueing in the corners off the object. (Couldn't detect this on smallers objects)

So, it's not an auto bed leveling problem, no ?
I think it's a problem with the belts, too old ? bad quality ? bad tension ?

-- 2 --
M48 in 9 places. (Don't think is usefull you spend time with this now (?))

M48 X 20 Y 20
09:17:26.687 : Mean: 9.402938
09:17:26.687 : Standard Deviation: 0.003792
09:17:26.687 : echo:endstops hit: Z:9.40

M48 X 20 Y 100
09:20:38.015 : Mean: 9.420688
09:20:38.015 : Standard Deviation: 0.010226
09:20:38.015 : echo:endstops hit: Z:9.43

M48 X 20 Y 180
09:23:49.484 : Mean: 9.334564
09:23:49.484 : Standard Deviation: 0.002696
09:23:49.484 : echo:endstops hit: Z:9.34

M48 X 100 Y 20
09:27:03.859 : Mean: 9.261376
09:27:03.859 : Standard Deviation: 0.011367
09:27:03.859 : echo:endstops hit: Z:9.29

M48 X 100 Y 100
09:30:15.359 : Mean: 9.179813
09:30:15.359 : Standard Deviation: 0.000688
09:30:15.375 : echo:endstops hit: Z:9.18

M48 X 100 Y 180
09:33:26.875 : Mean: 9.321436
09:33:26.875 : Standard Deviation: 0.002306
09:33:26.875 : echo:endstops hit: Z:9.32

M48 X 164 Y 20
09:36:41.328 : Mean: 9.171938
09:36:41.328 : Standard Deviation: 0.007783
09:36:41.328 : echo:endstops hit: Z:9.16

M48 X 164 Y 100
09:39:52.859 : Mean: 9.166501
09:39:52.875 : Standard Deviation: 0.007727
09:39:52.875 : echo:endstops hit: Z:9.16

M48 X 164 Y 180
09:43:04.281 : Mean: 9.373126
09:43:04.281 : Standard Deviation: 0.005513
09:43:04.281 : echo:endstops hit: Z:9.37
Regards.
Fabrice