Hi! Sorry that I missed your post. I messed up my watching settings of this thread.
It sounds as if the one PowerBlock somehow got broken, I am sorry for that!
Unfortunately, I only have the PowerBlocks already assembled. Too few people were asking for the bare ones so far. However, I am planning for a next revision that offers more variants when it comes to the connectors, e.g., no connectors, Molex connectors, etc.
I could offer to desolder the header(s) for a small allowance. Please get in contact with me if you are interested in that.