I have a 2005 Honda 400 ex that won't idle. Used to ride it every day but went off to college and it sat for about a year. I can get it to crank and it runs fine as long as I am giving it gas but as soon as I let off it dies I have took carb off and cleaned as well as I could and it wasn't that dirty but I don't know much about carbs. I have adjusted idle screw all the way in and out with no difference being made . only way I can get it to idle at all is by adjusting throttle adjustment on handlebars. Any tips or help please !