I just bought an Archos

Question

I just bought an Archos 404 on Ebay and the headphone jack is not working properly! The sound only comes out of one side. I can get it to play out of both ears but its takes alot of jiggling and pulling it out half way and ... I opened it and saw that the jack was just loose in there. I soldered 2 of the four little tabs on it and it is better but still just out of one ear! Should i be replacing the jack or is there a fix?