ChaoticKinesis
Head-Fier
Have you tried the stock Starline small tips? I've fit various other tips but would agree it can take some effort due to the thickness.Yes - I've really struggled getting the zsr to fit well. I normally use small silicone tips and struggle to get any over the nozzle, which is bigger than all the other KZs I have and makes the tips stretch. Having tried every tip that I have including foam ones which others have had success with but I don't get along with, I have given up on the zsr.
If you have really narrow ear canals you will probably have a more comfortable fit with longer tips that extend past the nozzle, such as the Starlines. With shorter tips the long, wide nozzle may press against the canals.