I would not venture into modifying the K-Lite. I know it can be a bit frustrating at times, but experimenting with different styles and wick options is part of learning what works for you. Based on your description, I would hazard a guess and say that you are somehow choking the wick which is leading to a burnt taste. Would love to see one of your setups, before you change out the coil i.e the burnt wick in the chimney chamber.