As the title describes, I am having what I believe to be an issue with copper tarnish I could use some assistance with. There is a copper sink in the home I am staying in and though we have been very careful to clean it regularly after using it, recently a spot we believed to be tarnish appeared. After purchasing and using Tarn-X cleaner it appears we have made the problem worse! I have included images of the progression and if anyone can help me I would be greatly appreciative. Have a nice day!