We will be attending the NC rally next weekend and it will be our first time with water hookups, thus the first time we try out the water system in our camper. I plan on sanitizing the system this week in preparation, and I've been looking at my water heater a little bit today. I have a few questions if anyone wants to chime in. For the Suburban water heater installed on my pup: 1. What is the best way to clean the threads on the drain/anode rod receptacle? I bought a new anode rod (the old one was over 50% gone) and was trying to thread it in, but noticed significant calcium buildup in the threads that accept the rod. I went at them with the hose and a wire brush and got some of it, but there is still a significant amount built up. I can keep brushing away, but thought someone might have a better approach? 2. I understand that the anode rod port functions as the hot water tank drain as well. As an alternative, will just opening the drain valve for the hot water line accomplish the same thing (the one that's right next to the cold water drain line, under the camper near the sink)? 3. Since our water system has yet to be tested, I fully expect to run into an issue or two once we get it hooked up. Other than the basic tools I keep in my toolkit (pliers, screwdriver, duct tape, etc) can anyone think of anything specific I might need to bring in order to perform simple repairs onsite (for either the water heater or the water system in general)? Lol, maybe a couple extra towels I've ordered one of the Camco tank rinsers as well as a drain connector for the gray water port (plan to drain into a 5 gallon bucket this time around - if it turns out we use the water quite a bit I'll upgrade to a gray water wheeled tank). Thanks in advance gang!