Heres a long list of questions.`So I bought my stove and ordered my liner this weekend Im prepping the fireplace for the install. My forst problem is the exsisting damper is only 5 3/4" so I need to either remove it or I have read somewhere about ovalizing the round liner. I am leaning towards removing the damper. Now how in the world do I do that? Do I need to remove bricks if so do I need to reinstall them after Im done? can I just reach up there with a saw and hack away until I get a 7" gap? Or would it be easier to just ovalize the pipe I can see a benifit to that for if I ever move the damper will be there for the new owners (not my stove thats going with me wherever I go) Also when I get this done what would be the best approach for istalling the liner pulling it up the chimney or pushing it down?