First post here I hope I'm in the right place. I've got two deep fryers one is a newer imperial and one is an older garland. The imperial has a newer robertshaw millivolt valve and the garland has an older bleed valve. I'm having the same issue with both. They function properly except when the unit cuts off I have gas leaking out if my burner orifices and they are catching and holding a small flame. I have changed and adjusted thermopile and checked and double checked all my connections. I think I know the answer but I want some opinions before I go buy new valves for both. Thanks in adavance.