A new problem is affecting my KX1 (#442). If I tune on 40, 30 and 20m, the KXAT1 finds a correct match on all three bands, and after tuning, signals on RX are loud and clear. But after, as soon as I touch the paddle on 30 or 20, the RX signals drop considerably on these bands; but that problem don't appear on 40 m. Any clue? Thanks de Pierre VE2PID