From the early photos, that nasty crumpled flex appears to have been there right after he removed the old wood stove. I could be wrong. It happens once a year............I took the flex as being his 4" and the class A as double wall that the flex is running up into, no ?
![embarrassed ;em ;em](/talk/styles/default/xenforo/smileys/embarrassed.gif)
![arrowburn :ZZZ :ZZZ](/talk/styles/default/xenforo/smileys/arrow.gif)
![sick ;sick ;sick](/talk/styles/default/xenforo/smileys/sick.gif)