The carpet is a low (just barely over a 1/4-inch thick) wool level loop Berber type carpet.
Time was of the essence, of course, because, (and I know this comes as a big shock to you) the project was way behind and the customer was insisting it be done yesterday or preferably the day before yesterday.
So, down to the truck to see what we have to work with: about 3/4 of a box of covebase and a half of a sheet of 1/4-inch plywood.
The gaps between the floor, hearth, bookcase and baseboards were not even, but bowed, higher in some spots, lower in others.
Now before I start hearing, "What? Is he crazy? Too much time, too much expense! I don't get paid to do all that!"