I simply do not know what to do any more, this thing still shuts rights down after going at WOT for more than 20 seconds. Everything has checked out, compression was good, spark was good, rebuilt fuel pump, rebuilt carbs, replacing fuel lines, replaced bulb and filter, new spark plugs. What the heck else could it be guys, this is getting to the point where its becoming to frustrating to even deal with anymore.................... When I mean shut down I mean comes to a stop, and dies. There is still fuel inside the glass in-line filter everytime, why is this engine doing this?