Hi CharlesCoff,
Welcome to the Heartland Owners Forum and family. We have a great bunch of folks here with lots of information and all willing to share when needed.
When you go for PDI, do a slow very good inspection. Make sure you can operate everything and everything operates. This is from unlocking the door to draining the tanks. Make them have water hooked up, TV on.. you know,,, check it all.
Enjoy the forum and your new NorthTrail.
Jim M