Do-It makes a minnowhead mold that is perfect. The model is: JM-8-1632. It has four 1/32 and four 1/16 ounce heads. You could also use a roundball mold in these weights as well, or an aspirin head if you can find one in these sizes.
For me, the biggest advantage to pouring is that you can get the #4 hook size in the 1/32 without having to look all over for them or wait for the tackle store to re-stock. Actually, it's what got me into pouring for myself.
UpaCrick