Hi guys. Im having some trouble getting my machine to do what I want. Im sure its simple but I cant figure it out so I seek some help.

OSP-300l Control

So Im trying to mill in a water jacket using my c-axis with a double lead. I get shape underdetermined when I try and do it.

If anyone would be able to help me Id greatly appreciate it. Honestly prob easiest via phone or text so I can take pictures to explain everything and let you get a vision of what Im trying to do.

Please PM me if your able to help and we can share contact info.