Get table columns to stretch entire width?

Hi!

I have a table with 14 columns. My problem is that that there’s a small gap to the right of the last column, like the beginning of a new column that shouldn’t be there…

The image shows the problem:

(If image doesn’t show then use
THIS
)

I’ve tried solving it with using column expand ratio on the last column, but this makes it abnormally big… =\

Do any of you know of a property you can use, CSS or Java, that makes the columns stretch over the entire width of the table without causing large column disproportion?

I’m thankful for any help I can get!

Regards
/Max

It is related to this
other post
, that last column seems like a mystery for all…