Those earbud never fit in my ear but now i finally found a solution for it. No need sugru, everything you need is a cheap pen.
Step 1: Requirements
Scissors or knife
Step 2: Take Out the Rubber Grip
Step 3: Use Dremel to Blunt the Edge
Step 4: Put the Rubber Into the Earbud Housing
Step 5: Enjoy !
Thanks for your watching ^^