So, I just got my custom IEMs and I was wondering if hearing your heart beat in your ears is a normal occurrence. Or do I just need to brake them in or something or will I get used to it. Also how the IEMs sit in my ear are different. Here are some pics. My left IEM sits inward to the right, where my right ear sits flush with my ear but sticks out a bit. Is this fine or should I get it fixed.