Hi, I'm trying to move a freestanding Regency propane stove to lay new flooring. The stove pipe will rotate 360 degrees, but doesn't collapse. The liner pipe doesn't move. The mushroom shaped top of the liner is too large to get out of the permanently attached ceiling mount where the black pipe attaches. Should I just cut this old pipe out and replace it when I put the stove back in place? (Just bought the house). I don't know anything about stoves, but I want to keep this one, as it works well. I don't know how old it is, looks very similar to a U38/39 Ultimate, but has double gold bands.