Ive noticed mine doing this as well but I have a vmax 150 carbed version , but It only dosent after say I fish a spot and crank up to leave itl idle real low and almost die in gear but in nuetral its fine. But if I go ahead and hit it itl jump out and run like a sob all the way to wot and then it will idle fine till I kill it agian and restart it. Ive changed the spark plugs and put a new yamaha fuel/water filter on it and still seems to do it, I might just need to clean the carbs out anyone else have this problem or any ideas