sentences:  Unfortunately sales personnel in music stores DO know about that, but lack the skill and often skilled luthiers are not within reach; not to mention the extra time and/or cost to properly set up a guitar in what has become very price competitive, low profit product.Guitars with zero frets would be helpful in that situation.The photograph shows a high conventional nut on a factory made Japanese concert guitar and may serve to illustrate the necessity for evaluating the advantages and the drawbacks of modern guitar manufacturing.