I cannot remember checking my burners days, weeks or months after turning off the tanks to see if they light quickly, but I do have a related concern. When I turn open a tank, I see a mechanical indicator on top of the regulator change from red to green. If I then turn off the tank, the indicator will stay green for a couple hours and even as long as overnight. Then it again turns red. I have found and fixed a couple of very small leaks but without any improvement. I think I still have propane in the lines but the pressure is gone. Where is the system leaking? Solenoids? Regulator? Or somewhere else that I can check?