How long did it take to do and how experienced are you at this kind of thing? I have never worked on the inside of the case and am a bit apprehensive about doing it, but the vibration is driving me mad to the point of changing bikes, my commute is generally twenty to thirty mph for 45 mins and hate revving the bike past 4k, Prefer to bumble along at 3-4k but that's where the vibes are at.