I have a thunderbolt 500, don't really know the year. Serial # 3482148. The problem doesn't happen alot, just everynow and then. When I start up in the water, after running for a while,I'll put into gear to take off, and it will die. It will do this about 3 to 4 times before actually getting up and going. I just got the boat recently. It was a hand me down from my father. He just had carb. work done. Like i said before, it doesn't happen alot, and when it gets up and goes, you could never tell anything was wrong. <br /><br /><br /> Thanks Jeremy