Yo Hab
I was recently cured of said "creak" downthere by having the BB shell tapped. I was running an Italian Shimano BB/Suntour Superbe set-up and it started creaking like a Hitchcock doorway. The frame was taken to the LBS and they tapped the shell - ta da! Installed a new Miche BB and cranks and the sound is totally absent.

So re-tapping the shell might be a good thing - check with the LBS you trust most. And then check back in here!