Tore apart my cb650 carbs for the millionth time and noticed one of the o-rings on the end of the idle circuit needle valve was rotted away. (All of them are kinda worn down.) I spent an entire weekend trying to find replacement o-rings, as the guy at the Honda dealership told me the only way to get the o-rings is to buy 4 rebuild kits at ea. I can't find o-rings that small. I tried some web sites, but gave up after a while, as they are all manufacturers and sell them in large quantities. Any cheapskates on here that know the tip on the deal?