[Elecraft] K2 distorted audio on certain freq.

[Mike Duke]

     I have a new acquisition. I traded my Corsair II for a K2. Going
through it and finding small issues that need to be addressed.
     Besides just needing a thorough alignment, have noticed that on 40
meters at 7184.00, the audio is extremely distorted but not on any other
part of that band. I have the owners manual, nothing in trouble shooting
about distortion.
     Ser. #3631.  K2 IOC 1.07.  K2 MCU 203.   KSB2 1.07

     Every 5 minutes I also here a noise like a quick cyclic pulsing for
about 5 seconds and it goes away.

      Does anyone know of a  regimen of procedures I could start to
troubleshoot and check these issues?

     Thank you

Mike
Kj4pom