Thanks for the help. The z-axis was a little dry about half-way up.

I just got the M2 a few days ago and have not had much time to play with it. I have come across a problem this morning with the z-axis. When homing the z-axis, about 4cm from the extruder the z-axis just drops all the way to the bottom of the machine and tries to climb again. When it is about 4cm fr...