Refer to image: The red beam you see overhead in the picture (which runs perpendicular to the other beam) is directly underneath a hump which runs from the bathroom, into the hallway, and into the hallway closet. It is a fairly large hump at nearly 1/2" above the floor.
Question I have is, can I simply lower the support using the lug at the top of the threads or do I need to enlist the help of a professional? This is under 3 levels of condo units. Thanks!