You brought up an interesting point. Being a difference in wheel weight material depending where it's origin is from. I haven't paid much attention as to my casts in judging if one W/W material was any better at casting than the previous batch. Since most of us get our W/W pre-fluxed by the sellers. I always thought it depended on the seller how or what they threw into their furnace/ smelter made the difference. But I have to admit there were times here and there over time I did have little quirks with the dross itself. Sometimes I can cast and have 1-2% throw back. And other times its 5%. Molds are either to hot too cold. "Well you know the drill."_ Anyway. We manage to get by. Shinny or frosted they all end up down range. BTW is that a Bunn or a Coffeemate in your last examples LAH?_
Regards,
S/S