While listening to CW and S meter setting at zero , the first dit or dah I hear is ear piercing .. My CW sidetones do the same ! I've always used AGC Fast in CW , Tried AGC Slow also tried adjusting AGC-THR and AGC-SLP.. I'm sure I'm not giving enough information ... FW is 05.14 , SN 32xx. Should I install latest FW ? Ed N5DG