So I have my 360 w/ a VGA cable and I use the red/white to 3.5mm adapter to plug into my 2.1 setup. When I plug the jack into my sub, the fit is not tight and easily falls out. I have to adjust it prefectly for 5 minutes and then not touch it a single time for sound to come out of both the L and R speakers. How can I fix this? Even when I plug my speakers into what I think is right, whenever there is sound on my right side, its very faint and I cannot really hear it. Any suggestions? Thanks