Replicator Dual - Nozzle Centring Script (That actually works)

The script included with ReplicatorG is either designed for a Single or a Dual Replicator I can not tell, but it doesn't with a Dual! It also has the potential to crash the nozzles into the HBP.

This new script homes all axis', moves Z down .5mm, moves the carriage/right nozzle to "stored centre" and allows you to adjust it if required. I've also adjusted the Z speed as suggested on Google Groups by someone (I don't remember who).

I've read many posts on this issue, it's been suggested t