An old post but one which is attracting a lot of attention and for what its worth we will throw in our suggestions. There may be some confusion over thge word integrated.
To retrat the front feet and rdrag it out a little, infers that it is not fully integrated at all, just slides into its space. If this is the case it is sometmes possible to slide a sack truck (hired from a locat tool centre) under the appliance and lift a tiny bit to clear the obstructions (usually a sliver of lino or the back edge of floor tiles not cut right back to the wall) which is trapping the back feet. Hope this helps. Loads and loads more info on the main website pages at http://www.diydoctor.org.uk/projects.htm