Hmm, sounds good (and photos would be great to confirm) but depending on how much clutter there is, maybe try cluttering up even more (even if temporarily) to really break up the space so the picked on birds have as many hiding spots as possible. The idea being that you can't see from one side...
How long did you do see but no touch before letting the birds mingle?
Any photos of your set up, as well as measurements? How does the run area look - big empty area, or cluttered up with plenty of hiding places and stuff low and high? How many feeders do yu have?