Well,I'm not sure what I did either, HOWEVER, the firmware works great so it must be something else. Who knows. I did get it dialed in by manually counting the number of times I moved the Z down. What's working for me is .80 as the Z offset. I did install the TH3D bed kit so no more wheels or springs. Knocking out the standard CHEP Cube. Will run a bed level print after and see what happens.