I'm using the Goedrum HHC, too. I haven't had any problems with it, yet. Granted, I haven't torn it all down and reassembled it, either.
When you say it happened on every song, do you mean it started working again and then went to this half-open position?
I noticed on my RAW readings on the HCAL screen, it goes from ~818 (open) to ~985 (closed); however, if I press a little harder while down, it moves back to 960. I thought that was a feature, though.

Maybe that's a clue as to what's happening with yours? What are your readings?