[toadpenguin]

I've owned, used and loved my Meelectronics A161P IEMs for a few months now, but last week I noticed the volume in the left earphone was significantly lower than in the right. At first I thought it might be a simple earwax obstruction so I cleaned the tips and housing of all visible wax and didn't hear any improvement. Then I thought it could be earwax lodged behind the grille of the earphone itself, but after cleaning the grille of both earphones using rubbing alcohol the low volume problem in the left has not improved. I'm starting to think this could be a more serious problem, can anyone advise what it might be or what to try next?
 
Thanks in advance.