The screw openings on the ring that goes around the lower part of the legs do not line up with the openings on the flanges.  I can get one screw in, but the rest then do not line up.   I even tried the ring to the other chair, and it doesn't work, either.  Now what do I do? I haven't opened the second box with the other two stools in it.  Looks good on paper, but just doesn't work.