What devices are you using in the audio chain? Besides the in-ears or the recording, the imbalance can also be caused by a headphone amplifier with analogue volume potentiometer.
If that's not the case, you could (on a PC or your DAP if it supports it) set the recording to Mono and check whether the imbalance issue is still there.
Basically everything i use with it has the image a bit to the right. i dont know if i am imagining it, but when i use other earphones or headphones i dont "notice" it.
Using oppo HA2 which has an analogue pot, but my mojo doesnt have an analogue pot and its presenting the same issue, same with my Lyr 2 and my Soundblaster E5