Trouble hearing phone calls but everyone says they hear me fine

view story

http://forums.androidcentral.com – I've notice lately, after flashing a custom rom, that during calls I can barely hear people on the other end yet they hear me fine. I have check all volume levels on my phone. Even with the call volume Zahl the way up and on speaker is still very hard to hear. It's extremely annoying and I have yet to find a post about it on this forum. I did however find a post on another for with a similar problem and the way he went about fixing it was flashing a custom radio. I have no idea what that is and I can't find a thing about it on Google. I need help with this situation badly because I don't kn (HowTos)