I replaced my shortcodes for columns from the old versions (from late 2012) to the current [row] [column] format. However, no matter what I do, the second and third columns are set lower on the page than the first column. The amount lower seems to be about the same as a <p> in height.
I've removed <h2> headings in my columns, changed from three to two columns in the layout--still the columns are of uneven height.
My site is here.