Thanks Clive!

Yeah - I've been looking at a German company: http://www.dold-mechatronik.de/Alumi...er-i-typ-b-typ

Turns out, the link you posted get their stock from the site above :)

Thanks for the advice re bolting it all together. There is one bit that has a 'locked-out'

I've already started on the 20mm adjustments.

The spacer blocks will be there until I have the ability to machine out the Z plates. (and as you suggested, the brackets that hold the ball nut to the Y plate supports.)

Thanks again.

Will post next version soon... (no use calling it final.... ever, no such thing hahaha)