Kit

For the Inspectors: I am not an inspector. I own a home circa 1861. The chimney is in the middle of my home. It rises from the basement. In the basement it is made of large lime stone/sand stone with sandstone mortar. At the first floor it changes into homemade red clay brick with the same mortar. It is straight as an arrow until it reaches mid second story where it sort of tilts to the south and then rises straight again. (There are no cracks anywhere.) Do you know why this would be? Our theories: 1. they missed the hole they cut in the roof and had to move it slightly to fit. 2. it was made like this to offset the weight. 3.The hot water heater has been vented up through it and the condensation has gotten stuck about where the bend is and has softened the structure at that point.