I'm sorry, but could you clarify that some? My knowledge base is in mechanical systems - I could design this to be entirely mechanical but then I run into an issue when I am machining the parts for the thing. They would end up being overly complex for the system I am designing. Electric control seems a more streamlined and efficient method. But, again, I know next to nothing about the subject, so I need it expressed to me in layman's terms. Or if you could point me to where there are some resources for me to study, I would appreciate that as well.