I know this has been discussed on here before but I cannot find a similar issue to exactly what I’m experiencing. I have a new VC intrepid when I have the cat installed and the bypass closed at proper temp I get Smoke spillage from the top load door. If I remove the cat and only use the secondary burn feature with the bypass closed I get zero smoke spillage even with primary air entirely cut off. It seems to smoke more after I add wood and cut back the air. I’ve tried increasing fresh air and the problem still exists. I’m pretty sure it’s a chimney height issue I’m at 15’ from top of stove. I’ve purchased an additional three feet of pipe to extend. Am I on the right track to addressing this issue?