Do you mean my master tools offset on X should be set at like 9/16"? Zeroing the dro this way really throws everything out of whack for me. If I use tool offsets in M3T and in DT, they don't offset each other, but double in the DRO. To get to the tool then, it has to travel like 7.5". My X only has just over 5" of travel, so that ain't working.
I am using radius mode in both though.
I will try Diameter mode in both and see how that works out.