I don't believe this to be the case since I get full sound out of both ears when the jack is in the semi inserted position

Bump. I would really like to know if I need to send these back, I've only got one week to return...

Just received a pair of GR07's from Mosoundus on Ebay. The headphones seem to work just fine except for one thing: the plug seems to be too long. When I plug the headphones completely into any headphone jack, the sound is muffled and extremely quiet. When I have the headphones partially inserted...