I have recently purchased a Kenwood TK-7160HK second hand. When I went to program it I ran into a read and a write authorization password. I asked the guy I bought it from if he knew the password and he did not. He's also not a radio guy so I get it. Is there anyway to remove the password lock? I have used a 8160K before and used the KPG99D programming software and from what I have read online the software works for the 7160HK too. Any help is much appreciated.