I read the "sticky" and went down my basement since it's 40deg, rain, and
windy in Ohio now. I took out the screw and found a 1/8" dimple (stake) in the base. I drilled it out, hit the base with a drift and it moved, then finished it off with a dowel. I am now drinking some wine, smoking a good cigar, and my cat is patting me on the back for the good job I did. You guys made my day. Thank you big time. I would have never figured this one out.