Does anyone know if you can get a mold with all 1/16 heads instead of all different sizes? All I can find is regular ball heads and I'm looking for either a pill head or a walleye head with the recessed eye sockets.

Have you tried looking at Do-It Molds's site?
http://www.do-itmolds.com/

I know they have "Pro" series molds that do all one size in the round head and round head with collar. Not sure on the specific head types you are looking for, but I would think that they do.

I would check the site above and then see if you can cross reference the part number with somebody like Barlows Tackle.

Hope that helps.