Hi,  I'm working to clean up a messy org and my current challenge is to remove the Volunteers App. There are loads of dependencies to delete including a lot of apex code, before I can uninstall the app.  I'm stuck because the apex test coverage for the org is around 76%, and when I remove the offending apex it drops to 74% which stops the deployment.

How do I find other classes in the org which have minimal or no coverage, so I can cover or delete them.  I read there was a test-coverage console window in the dev console under the  Test tab but I don't see such a thing.

Any help would be greatly appreciated.  Thanks,
Mark