well getting a 2nd qualified opinion was certainly money well spent! Problem seems to be with the joists that meet and overlap at the site of the post that was adjusted downward. On one side there was space for the joists to drop, however the other side has a basement wall attached to it, absolutely tight with no room to move, so when the one side dropped, the joists on other side with no room to move were forced upward - hence causing the noticeable hump in the upper floors. Will have to cut the wall either at the top or bottom to allow the joists on that side to settle downward onto the supporting beam to be even with the joists on the other side. When explained properly this made perfect sense to me, someone with no DIY expertise. I say this to encourage you other newbies to take heart, and don't be bullied into accepting explanations that make no sense, like my contractor telling me it was just a coincidence that the hump appeared after the post adjustment. Thanks again for your feedback and hopefully this might help someone else to runs into similar problems.