Jon, thanks for posting the link.
Ditto other comments about taking the opportunity to insulate the exterior side of the cavity.
Re: modifying the fridge and voiding your 2 year warranty. I don't like the weasel warranty provided with these fridges. "2 year warranty" if, big if, you take it to a service center and have it serviced. Otherwise, good luck on getting warranty work in the 2nd year. Don't like warranties like this, to me, it's not a 2 year warranty if you have to spend probably a 100 bucks to keep a warranty valid for the second year. OK, rant over