I bit the bullet and got the piece of crown molding in! It's no work of art but it's in!
You'll remember that the one side was 1/16" too long and had to be trimmed back. The easiest thing would have been to turn the dollhouse upside down to allow better access but I didn't want to take a chance on doing that because of the bathtub and the fireplace.
So I decided that turning the dollhouse on its back would at least help with access to that piece of molding. BUT even that presented a potential problem as all the wiring and plugs were on the back of the house. So I taped some boxes to free areas of the back so the plugs would be above the table when I put the house on its back.
Rather than remove the front of the house, I used a mop handle to hold it in place while I worked on the molding.
After much fiddling, the piece of crown molding is finally in! Needs a paint touch-up but it's in.
Now to carpet the floor template and install the final floor. Then I can load the furniture back in and start the final decorating.