I'm finding the WCS and lathe coordinate system very confusing. For some reason, SC (all versions so far as I know) insist that the lathe Z (spindle) axis be aligned along the WCS X axis. Why on earth would they do that? Also the revisions to the tool library seem to insist on changing units from inch to mm, so that a lathe tool defined with a 5" long tool holder becomes 5 mm long.