hey guys ok heres my problem..... i traded my 400ex for my wife a shee able to get mine back :biggrin: but the damn thing dont run right. got it home started taking of the spray paint it was everywhere lol pulled the carbs there were nasty cleaned them put a new air box & filter on it (thanks brad) kicked it over once started up and idled fine... with no load on it it revs fine put it in gear and take off and it boggs, poops, farts lol runs like shit wont rev ive changed jets,from 220 to 280s, neddle settings,carbs, same thing... i had a jet ski do the same thing and it had a broke reed this one dont. i looked at them they look fine even if it needs a top end it should rev fine(every time ive had to build mine it took forever to start but after it got running it revved fine) soooo anyone got any ideas? im at sea level,tors by passed fmf fatties, no air box lid thats all i know about it lol thanks