Hello there, I just joined to ask for tech support. I just aquired a d6c, and I am very pleased, however I have an issue with it, there is a slight popping out of the right headphone that's present when a casette is playing, even with the volume down, the popping is the same volume no matter. This only happens with the headphone out, the line out is fine. I just want to know if this is a problem I should be concerned about, and if it can be fixed by a relative amateur. Thanks in advance