Yeah, I had that problem, too. What you have to do is make it so each table cell stays the same width and height regardless of what's in them..
In the same file (inc_reviews.php) find the code marked in
red:
Code:
Content visible to verified customers only.
and replace it with the red code here:
Code:
Content visible to verified customers only.
Notice how I added a height and width parameter to the code. You can change those numbers to be anything, depending on what size you want them.