This is the sort of thing that results in the advice to import entourage into a separate file to check it out and clean it up before adding it to your project. Obviously it doesn’t take a whole lot of bean cans to run the file size way up. Sometimes there is hidden content that can be removed along with things like name badges on appliances that can’t be seen unless you zoom in very closely. You need to watch some of the kitchen appliance models out there, too. I’ve seen refrigerator models that have the racks inside along with the icemaker, plumbing, compressor, and even the screw threads on the leveling feet.
One thing you could look at is the video Aaron posted on YouTube today about tags.
In a nutshell, only objects (groups and components are given tags. ALL edges and faces should be created and remain untagged. So you should never move the pencil icon away from Untagged. One thing that can snag you is exploding objects. The contents inherit the tag from the object. If you explode a nested (parent) group or component, the child objects inside get the parent’s tag. If you explode an object to raw geometry, the raw geometry gets the tag. (There have been feature requests to change this behavior for raw geometry. Hopefully we’ll see a change one day.) If you are exploding to raw geometry the very next step should be to untag the geometry in Entity Info while that geometry is still selected.
I usea plugin called Default Layer Geometry from Sketchucation to fix models like yours. It’s actually one of the first things I do when I get a model open. It would be useful to run it for entourage components from the 3D Warehouse, too.
Hopefully that helps.
By the way, those dining chairs remind me of Belel and Lokai in “Let That Be Your Last Battlefield” from Star Trek TOS. 