Our professional guitar technicians inspect each instrument by hand, then perform a full, and precision setup. All brand new guitars need proper setup after shipment to suit your personal preference that would strongly correlate to your playing style. Truss rod adjustments are made to alter the straightness (flatness) of the neck. Truss rods often require adjusting when temperature and humidity change the amount of bow in the neck. Weather, specifically temperature and humidity, may have a dramatic impact on the way your instrument plays. All instrument woods expand and contract with seasonal actuations in temperature and humidity, and naturally, string height and playing action are affected. The neck needs a simple truss rod adjustment to correct any problems like fret buzz and bow neck which can be easily done by guitar experts. And also, you may adjust the bar of bridge. Please be advised that guitar necks are crafted from wood, and they will sometimes shift during shipping and as the temperature/humidity/elevation changes. An important part of maintaining your guitar is knowing how to adjust the truss rod. When a guitar experiences temperature and humidity swings, such as when seasons change, it can develop a slight bow in the neck that results in a guitar that plays buzzy or is suddenly much harder to fret. If this situation occurs, you can often correct the problem simply by tightening or loosening the truss rod. You may bring your brand new guitar in your Local Guitar Shop for proper setup and adjustment of the truss rod.