Hikerduane
Do try to adjust the pressure, it does make a big difference, you don't want to overfill it, but you want your hips off the ground, and it most likely go down a bit in the night as it cools off. It should feel soft under you.
Jim <img src="/forums/images/graemlins/cool.gif" alt="" />
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These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.