I got this mic a couple of months ago but haven't used it much until today. sometimes it doesn't make any sound except a hiss, sometimes it has very low gain and sometimes it works fine. to fix its state from bad to normal it requires a stroke (i know, probably really bad, but by experimentation I found this out). I'm guessing the ribbon is loose or something. I don't know anything about ribbon mics or how they work so I don't want to ruin it by trying to fix it. does anyone have any suggestions?