My husband and I purchased a 2008 Bighorn 3670RL several months ago and we love the layout. Since then we and have been searching through the forum for answers to our issues and questions. I want to say what a wonderful wealth of information is on the Heartland Forum and the members are so generous with the sharing of information--thank you. As we work out the "kinks", the forum has taught us that we should replace the "china bombs" (took me a second to realize it was referring to the tires!)--did that as soon as we got it, we have learned how to maintain the rubber roof--just worked on that this weekend, found the water heater leaked--in the process of replacing, and a few other minor replacements or adjustments. Tonight when I get home I will figure out how and where to post my first question --issue with the furnace fuse blowing and we haven't even turned it on yet.