I got a company does full liner installs AND sweeps chimneys to sweep my chimney and see what they find because my draft is terrible. They didn't find anything wrong so, I told them about a possible crimp. They put mirrors to look up the liner and said there's a small one but it certainly is having very little impact on your draft. They also informed me, that if there was a crimp, most likely that spot would be full of creosote and there was hardly any. They also said if draft was affected they would've found more creosote. They only found 1/8" flakes around the ending 5 feet so, they told me it's burning especially clean if that's all there was after 4 cords. They seemed to think there was minimal creosote for 4 cords, and the wood I burned must've been extremely dry... I know the wood was rather wet. They told me the only thing that could be is that my chimney is simply too short because a crimp would cause creosote in that location or cause more creosote to form later in the liner. With as little creosote as was in there, there isn't a restriction. Is that true a crimp would cause creosote in the location or later? My liner is 16 feet with my chimney ending around 14 feet above, my liner is sticks out a couple feet. Any other ideas or, is that all the symptoms of a short chimney. Smoke pours into the living area on reloads, difficulty in getting a fire going, starting a fire and leaving the door open a crack when I shut the door it can occasionally go out, unusually long burn times. They told me, if it took professionals 2 days to get the current liner in there, I certainly don't want to be taking it out and nothing with the liner appears to be the problem, has to be a short chimney. Your thoughts?