I was casting today & I went to get me a drink & when I got back I found that my Lee 4 20 was empty so I got up all of that spilled lead & re melted backdown & give it a good fluxing & it cast some very nice looking RB I wonder why it just poured out like that for no reason so now if i leave it I screw the flow & turn it off My Lee 4 20 is a good casting furnace just a hiccup I guess