hello everyone, this is my first post here. I just purchased a 1997 Sea Doo GTX today, when I brought it home and started it, it idles at 3000 rpm, I cant firgure out how adjust that down. It also has a rattle from inside the impeller, when you shine a light up inside, I cant see anything, but it kind of seems like the impeller isnt spinning perfectly straight and possiblt hits the casing when it spins, I asked the guy about the noise and he said its done that for years. I'm not sure if maybe when I put it in the water if it'll stop or get quieter? Right now I really want to get the idling slower...any help would be great....