/Mode A? No wonder you're having trouble with the letter C. Mode A can't remember that last command. That is why I use mode B. The problem isn't the K3's keyer. Steve/ I'm sure Mode B is fine Steve, it just wasn't around when I started playing with twin paddles. The K3 keyer is fine too, I just had to adjust my lousy timing to suit. 73 Norman - GM4KGK