I'm afraid I don't use Metrix directly so I can't provide you any specific details or comment on scale shingling - but I know that ever since our shop purchased Metrix to integrate with Pace, we've encountered problem after problem. Management has pushed prepress to adopt Metrix numerous times but there has always some serious problem or miscalculation encountered each time we make a serious effort to switch that sends them running straight back into the arms of Preps.