So I’m wrapping doing what I hope it my last weekly clean of the season on my Harmon P35i, and I pulled out the ash pan only to have a ton of brown/rusty ash come out from under and behind it. I emptied it and flipped it over to find a very charred back and sides of the ash pan. There was also a thick build up of ash on the back side. Is this normal? I’ve attached a few photos. This stove was installed new in August 2018, so it has only been used this season. PS, I’m thinking this may be related to a slight smoky and plasticy smell I’ve noticed while burning over the last few weeks.