I just came back from an awesome three day trip in up state New York on my 99 skidoo MXZ covering 450 miles. I had a problem each morning after it was started (two pulls) that it would cut in and out for about 15 min. into rideing. I don't think it is a fuel problem, but it feels like ignition. Even sitting with the rpm at 3000, it would shut down and re-start itself in a regular pattern. After a while it would run great all day. It also would happen after a long stop for lunch. Any ideas? Thanks!