My new three week old PCM M10 has been introducing some really loud and annoying crackles and static (while in record mode) at the slightest touch of the mini stereo plug jack. In other words, even slight rotation of the plug or manipulation of any kind (not pulling it out of the jack, of course) causes horrible static to be produced. I'm using a Rode NT4 mic, for what that info's worth ( I don't think the mic is at fault). Have tried two different cables (both new) with no improvement. Haven't dropped or torqued or in any way mishandled the unit. Is this a common problem? Thinking I have a bad jack connection inside the M10. Thanks for your suggestions.