Im new here and I hope somebody can help me. I have a 99 Foreman 450ES. About 2 years ago it was submerged...long story. I had it completely rebuilt and everything on it is running perfect. After I got it back from the mechanic I rode it for a while and it was fine. Then it stopped shifting. I changed the angle sensor, the CDI box, cleaned all the connections. Finally a few months ago I changed the battery and everything was fine. Well there was a HUGE party/mud ride this past weekend. I tried to take it through the shallow parts as much as possible. It ran fine until I got ready to leave and when I cranked it up to leave it wouldnt shift. Anybody know what to do? Any advice at all will help. Thanks.