Audio jack on the A40Mixamp is loose, works if I hold it down, HELP!

Hey guys,

I KNOW this has a solution, I just need to find one as the internet hasn't seen this one before. So I can hear audio perfectly fine, and I can hear my friends perfectly fine, but in order for people to be able to hear me I have to practically hold the wire down into the audio jack of the Mixamp. The moment my hands come off , my friends can no longer hear me. This is incredibly frustrating, as its the reason why I gave up on trying to fix it any way. They are so comfy, and before I consider buying a whole new mix amp for 140$... I would like to see if theres a screw I can tighten in order to make that hole a little tighter... or at least tight enough for voice to be able to go through without me having to be perfectly still and holding it down.