Call and set up an appointment with the inspector so he can dedicate some time to you, don't try to catch him between other tasks. Remember that it is NOT his responsibility to design the system for you. Most inspectors will give you some guidance, but they certainly don't have to. They do, however, have to communicate with you. If that doesn't happen call his boss and ask for assistance.
Remember, even though your friend somehow got a permit with a poorly-designed diagram/system, the inspector is doing you a favor by putting the brakes on. His job is to advocate for you and ensure that everything is done correctly...The way things are drawn, it will not work.
Not even close. So work with him, not against him. But do your research and don't expect him to treat it like homework and make corrections on it for you. It needs a total re-design.