I just recently bought this house with a ventless fireplace. During the inspection the gentleman turned on the gas firplace with no problem. Now that cold weather is here and I want to turn it on I can not seem to do so. Is there a simple little trick to this, like holding my head properly? I don't remember the inspector doing anything other than turning on the gas valve and turning the knob in the fireplace. Any help would be greatly appreciated. Thanks, Ken