i have a 2001 200 opti with 200 hours i took it out for the first time this year and it ran great til end of the day . when i was going 5 to 7 miles anhour in habor and shift it in to nutral it would idle hi at about 800 to 900 rpm but when i shut it down and restart it and it would be fine until i go slow again and same thing . thank you for any input.