@dc42 Ok, you hit the nail on the head !
I sent the M579 command and just realized I did something wrong.
After I sent the M579 command, I get that response in the consol:
M579 X1.000 Y1.000 Z1.000
But at the end of the config.g I've written that:
M579 X1.015 Y1.085 Z0.980
Which mean it does not take into account the scale adjustment I try to push.
Where do I have to write it so it will be implemented ? Maybe I wrote the line at the wrong place ?
Right now, my M579 line is the last one, under the Miscellaneous. Should it be somewhere else ?
[EDITED]
When I open the sonfig.g file, a keyboard appear at the bottom of the screen. The keyboard is hiding the lower part of of file and there is no way to toggle the keyboard on or off. <- this could be a good addition by the way.
So yes, after trying many different setting, I just realized that I had a second M579 many line lower (blank one) and the M579 was with 1.000 on all axis, so it overrided my input.
I've erased it and see if it fixed my problem. I hope it will!