I hope my post was not confusing. I also did NOT want him to press the ref all button. I said to just zero the DRO's. What I was trying to convey was I thought that by zeroing the DRO's Mach 2 would also assign this location as the "Machine 0,0,0" location, Just LIKE doing the Ref all button. I have not done this before because I do have home switches installed, and I use the REF ALL button.
I hope that is much clearer now