been reading on here for a little over a year and you guys are the most knowledgeable and I thank you in advance. Back story: Bought this house a little over a year ago had a vermont castings Encore defiant model #0028. Been great or so I thought. It has heated my house as well as I would expect it to being in the basement. Side note this is my first woodstove ever, so took some experiment and reading to get it right. back track to about a week ago i was getting puffing of smoke through the lid and was having a hard time getting it up to temp. So did some research and figured clogged cat, so i dug in and took it out. wasn't clogged, quite clean in fact. Now here's the interesting part. the honey comb was facing the access door. Is this right? I didn't think so, so I tried to flip it. SOmeone correct me if i'm wrong. Next thing, started a fire got her buring pretty good but noticed my flu temps were higher than they were and my box temp wasn't staying as high as i would have expected it to. Did a little more investigating, foudn the flapper door (for the lack of better terms) has a gap about the size of a pencil on one side. Now my questions is. What caused this so I can prevent it. Is it warped? Best place to get a replacement? pics: RIght side: Left side: On a side note, I don't know the history of it and bought a new cat and gasket kit to rebuild. But want to make sure I get everything back in spec before I rip it all apart.