I’m doing Boil Them Cabbage Fown. In the 4th measure you play an A. I noticed it didn’t sound right. I checked my tuning and the third string is tuned to G but when I play the 2nd fret 3rd string, which should be an A, I notice the tuner says it is going towards an A#. It doesn’t matter where I put my finger in the fret space. Any thoughts?