The heads are 1.5 and 3. There are a few 4oz floating around somewhere too

I have been and will look at a lighter head, but I have to make all the stuff, so I can't go to crazy with number of sizes/color combo's on either the plastic or lead. The biggest thing is having a good hook with a big shank in a small head. To fish big rubber you don't always need a heavy head, but you do need a big hook with a long shank, and a wider gap.