Thanks so much for the input!

has he ever been able to stay uncrated in the house while your gone?
No, and I could never trust him. He's still very much a puppy in many ways, and tries to chew things up right under my nose. He HAS settled a bunch down in the last few months, but not to the point where I can trust him roaming the house or even one room.

Anna, do you cover his crate? I usually cover Cinny's crate at night and if she's going to be in it for very long during the day.

I've found that the TV or radio just seems to make things worse.

Do you ever give him a Kong? I like to pack them really tight and freeze them so they last longer.
No, I don't cover his crate, and I will defintely have to try that. Yes, we DO use the kongs and they just love them. We melt cheese, and then freeze them; PB and freeze them; or kong stuffin.

Thanks again for the input. I'm going to try a couple of things, and if nothing changes, then I will probably talk to a behaviourist.