I'm about 1 hour into my first insert fire ever. Is a small Avalon with 21' of insulated flex liner. What should I expect to see for stove top temps. I'm around the 300 to 350 mark and it's not really going up. I used a laser temp thing and if I shoot the exposed flex close to the stove it says 350 so its close to the stove top. I'm afraid at these temps I'm make creosote in my flue. Where should i be and how do i fix it. Thank you