R U Sure?
I think you should take a minute to take off the upholstered pieces AND look at the underside from the storage cabinet under the couch... and possibly from the furnace cabinet (the front pulls off).
I know they put better slides on the 2006 model, but I think you'll find you can pull it out. I'm not sure but I think they just had wooden slides on the 05, but put heavy duty steel drawer slides on later models. The 05's are pretty flimsy when extended.
BTW, for a single, just taking off the back cushions makes a generous single that's plenty wide.
Today is a gift, that's why they call it the present.