Ok..... suggestions thick and fast...... I like it.

Right, after zeroing and whizzing around on all axis.... the DRO's no longer correspond with the home. X=-1.3675mm; Y=-0.5475 and Z=+1.9063, all approximate figures.

I looked at the setup of the motors and see: X-axis "steps per"= 800; "velocity"= 1500; "acceleration"=200; "step pulse"= 5; "dir pulse"=3

Y-axis "steps per"= 800; "velocity"= 1500; "acceleration"=200; "step pulse"= 5; "dir pulse"=3

Z-axis "steps per"= 800; "velocity"= 700.2; "acceleration"=100; "step pulse"= 5; "dir pulse"=3
Velocity and acceleration in the above is mm.

The stepper motors are 57BYGH488 1.8 degrees and 2.5A. Can't really answer regarding drivers and power supply as I'm not sure where to find this info.

Yep..... the photo's certainly worthy of a giggle...... I did..... after the cursing!!!