I push the button in, click the striker, and the pilot light is lit. I hold it for 30, one minute, two minutes, three, it does not matter. As i slowly ease back on the plunger, a 10th of an inch before I am to twist the plunger knob to keep the pilot lit it goes out. This unit has given me problems it has been installed. i there an adjustment that can be made so i can use the fireplace?