Hi, Art, Brian
Using Mach3R2.0.065 hear, Looks like you've been working on Turn and LC in general, Lot's of Fixes noted hear.
Assuming that lots of this code will be used on new LC, hear are a few item's I've found.
Using AOuterProfile.dxf posted above,
LC is using the Step Distance Units as Bar Stock size in some fashion, Bigger step distance bigger bar dia.
Also cut order in G-code is mixed up, LC preview looks correct.
Fixes noted,
Able to delete Layers in Project Tab and not lockup LC when re-posting G-code.
Mach3 now treats the X0 y0 last line return to origin with out editing G-code.
Just some Info, Chip