The left side of my KXPD2 paddle is not working, the right side is fine. I've reversed the CW KEY 2 setting and it continues to be the left side that doesn't work. Is there a simple test I could do to determine if it is a paddle problem or a KX2 problem? I don't have anyone local who owns a kx2 so I've no way to test with another radio. GaryKT0A