Huh. I’m doing the exact same part replacement soon. Wish Logitech just used the same grippy plastic finish that they used to have on models like the G700 instead of this short-lifespan rubber garbage.
I was wondering how the model was sculpted and if it could be extended to replace the entire rubber part, as it would leave some internal plastic exposed as it is, assuming you’re looking at the same STL I was looking at. Perhaps I should just reach out to the author of the model.
I hadn’t committed to an adhesive, but I distinctly remember one or more commenters just using regular double sided tape. It’s not like the tape is load bearing. You can just pull the part off with enough force and patience, especially if you don’t care about salvaging the part.