Contact page template column widths

Hi Kal,

I’ve can’t find anything which has tackled this particular point, and I seem unable to ‘fix’ it myself, hence this question…

How can I make the contact page sidebar be fixed at 1/4 width by default? It’s currently set at "one-third column", with the contact form at two thirds. I’m after a 3/4 + 1/4 split, but can’t seem to achieve anything other than 50/50!