Last February I purchased a very nice, nearly new, used 2008 Hawk. I soon noticed a problem a number of other owners on this forum have reported. I had a slight odor of propane in the propane compartment and my propane leak detector would occasionally “sound-off” when the camper door was opened. The resolution for some of you has been to replace the tank. However, my efforts to detect the leak led me to be almost certain the tank was not the problem. I did the standard soapy water test on the complete tank and on all hose and regulator fittings many times and found nothing. This problem went on for months, with my leak detector only occasionally sounding. It was more of an annoyance than a safety concern for me, and I thought that maybe the slight smell of propane was normal. I finally decided I was going to solve this issue last weekend, but needed a different strategy. I removed the tank and unscrewed the regulator from the wall of the propane compartment. I then connected a spare vertical tank to the regulator and turned on the gas. Now, with the regulator freely accessible in the compartment, I took a bucket of water and placed it in the propane compartment and submerged the regulator in the water. At first I did not detect any leaks. I then turned the regulator upside down in the bucket of water and noticed a very small, steady stream of bubbles coming from the regulator vent. I shut off the tank and the bubbles went away. I turned the tank back on and the bubbles started forming again. My regulator had a very, very small leak in the diaphragm. I spent $20 and replaced the regulator and life is good again with my Hawk It was a simple fix, but a real pain to diagnose.