We highly recommend Tony's RV Repair and Service in the Columbia, SC, area (tonysrv.com). We have had numerous problems with our 2012 Landmark Grand Canyon (99% were with components, not Heartland's work). Discovered Tony's early in the game and have driven many miles out of our way to have them work on our rig. They have bent over backwards to get our repairs done and have let us stay many nights on their lot with electric and water hooked up (no dump station). They do warranty work for all the major manufacturers. We recommend them to all our RVing friends. The warranty manager is Dan Hand, a super nice guy who really knows his way around the complexities of dealing with warranty issues.