IEMs for Ears with Narrow Ear Canals

Hi,
I have narrow ear canals, and the problem is that many IEMs don’t fit me properly. I can't insert the earphone deep enough into my ear canal, and it constantly falls out. Because of this, the sound is very flat since the earphone doesn’t seal well in my ear.

For example, this happened with the 7Hz Zero 2. Even with the smallest ear tips, I couldn’t insert them properly.

Could you please recommend good narrow IEMs? Preferably ones that have been measured by Oratory. I use a Qudelix to adjust the frequency response and trust Oratory’s measurements.