I recently acquired a 2004 DRZ400S that has about 2500 miles on it. I really like the bike and have been riding on dirt with no problems so far. I am hoping to ride it on the TransAmerica Trail as well as some of the dual-sport roads in Texas. I won't be jumping it or doing any motocross stuff but I would like to hit some harder trails. I anticipate loading it with about 40 pounds of gear/luggage and then my 215 pound self which will be outfitted with heavy boots and clothing. When I sit on the bike, it seems to me that the rear end drops considerably. This is my first true dual-sport bike so I may be overthinking it. My other bike is a V-Strom which barely moves when I sit on it. A lot of posters say the shock and spring should be replaced. If I want to ride several hundred miles on dirt roads with that 40 pound load, should I do something about the suspension? If so, what do you recommend?