Sony CRE-C20 dome size

Interesting I am using Eargo 7’s and the one in my right ear gradually comes down. I assumed I needed a bigger size petal (dome) and went from the medium to the large. It still comes down slowly but its manageable. I just push it back up occasionally and I think its better than the medium petal.

My left ear works great with the medium petal (it stays put)

Why do you think a smaller dome (petal) would help? In my right ear the large petal goes all the way in (same as the left ear).

I was assuming smaller domes would allow them to go in further and maybe not fall out but I think sx is the smallest available, unless someone knows different.