Hi, I have a 2019 XL carbon comp, the dropper post is a Specialized command post and is 30.9mm, there is also a sleeve inside the seat tube post, i am looking to get a new dropper, do I need to get a dropper that is the same size diameter to accommodate the sleeve or can I do away with the sleeve and get a larger diameter dropper I.e 31.6m? (Not sure of the actual without the sleeve as I haven’t measured it yet) thanks