. The twin should work equally as well as the process you describe, but then I don't ever worry about it. What comes out is what goes fishing. lol That's the beauty of it all Bonez....those fish don't give a rip if the tail is a pin stripe or a partial color. When I get requests for core colors or split colors, whoever is doing the requesting is fully informed that what comes out of the mold is what they will be paying for. I can't recall ever getting a complaint. Having each split color bait unique is good in my books and is why I enjoy the hand pouring when its possible..