I pour many 1/8 and 1/4 using do-it molds with many different size hooks up to #1 Red sickle or #1 Litewirehook. I use 20 lb pot and adjust the flow so the holes fill up pretty quick. With hot lead, very seldom does a barb not form correctly. The more you pour and the hotter the mold gets, the better they pour.....at least for me. When I pour, I try to pour at least 1000 at a time no matter what size I'm pouring. Good luck and keep pouring.....