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[pjburkshire]

Just because the ink changed that does not mean the scribe took a break from writing. Maybe the first bottle of ink ran out and he immediately started using a new second bottle. I don't see any issue with the text that would indicate that there was a serious problem with the quill. The first part is a little tiny bit thicker than the second part so maybe he did change to a different quill or this could just be my imagination.