I am trying to remove the banister above. I removed all the screws connecting it the wall. I don’t see how the newel rods are supposed to be disconnected from the base (blue dot). There are no screws, I dried driving a chisel under it, to see if I could “pop it up” and it didn’t budge. I feels like the those down rods extend through the floor and are anchored in the concrete in the basement. I am close to cutting them off at the bass with a reciprocating saw. Does anyone know how this comes apart?