I've been using a Lopi Answer insert for seven years buring at least two cords with no problems. I only burn dry wood and I clean/maintain the stove each season. I have had a sudden loss of draft - literally, one day it works like always and the next it doesn't. Even with the air intake on full open and the door cracked a tiny bit, it smokes so much it will almost put out the kindling. That's never happened before. With the door cracked like that, I could just about vaporize the kindling in a matter of seconds because it would roar and crackle to life very quickly. I did a mid-season thorough clean and inspection and couldn't find anything obvious: No obstructions and secondary air pipes seem just fine. I'm at a loss, and as far as I can tell, Lopi doesn't accept direct inquiries from the public. My local dealer is the type of place that would try to turn it into an expensive bill. I don't trust them. I would appreciate any help out there! Thanks in advance.