My kitchen sink is dripping from what looks like inside. I was initially guessing from an internal connection where the line is connected from the factory. The brown deposits are on the line even up inside the threaded base so that leak is def from inside. Today i saw a drip from the set screw near the threads though as circled after using the sink. I’m not sure if it’s the same leak or possibly a separate issue with an O ring. Maybe the same leak coming from higher up. Not sure if this will even be serviceable. Once it’s off i can’t diagnose so just need a game plan. Thanks