I had a problem at first, that after calibrating all to ok setting and nozzle homing right but when pushed print, it raised Z to 0.3 at start.
With slicer 'I was able to put in z-offset to -0.3 but when it started to print, it raised to 0.1
0.1 seemed to be ok for first layer but then it raised to 0.4 so it increased it by 0.3 and all went to hell.

What is wrong? some setting or something on firmware but what?
I have newest marlin firmware installed and configged for this model.
my e steps are 2560 i have 8mm rods with 1.25 rise so I think I calculated that right?
or well I think it has 1.25 rise since so many others on same kit too has same specs.

only question is that what driver does mpx-3 use? i used the 1/16 polulu but can it be different? where can i find it out.