Has anybody with this card been on Watts Bar yet? I purchased one last week. Fished Chickamauga on Friday with no issues. Watts Bar on Saturday was a different story. The chart seemed to be off by at least 200-300 feet or so. It was showing my position to be on shore by a good bit in the backs of several pockets. Main lake points and ledges were off as well. I contacted Humminbird today and they had no other reports.