So I have a new Harman P68 which has been working perfectly up until recently. It used to fire right up when I turned it on. Now it takes 10 to 15 minutes before it lights and when it does light the burn pot is overfull so I get this huge flame. I scrape the burn pot daily and clean all the ash into the ashpan. Am I supposed to be cleaning something else here or is my ignitor failing already after less than a months use?