I forgot. Even if you have a dealer do the diaphram job it should be no more than a hundred bucks as all they could charge you is a half hour of labor, and the part is 30 some bucks. Go for it before it's sold. And with the low miles it may not need the diaphram for a wile? I would replace it though, as it will develope a small tear sooner or latter. If all of a sudden the bike seems to have less power, and or it takes more throttle to keep the speed at 55 or so, then the diaphram is developing a small tear, and it will only get worse, and if you keep riding it like that you could fry the engine as it would be running very lean because the tear is letting more air through.