Ok, i recently re-wired an entire knob and tube house with NM/B etc... I passed the rough in inspect. Upon my return to trim out i noticed that the home owner installed many more outlets, 3-way switches and the list goes on. Some how they also tied new exterior lighting into the bedroom arc-fault circuits. So itrimed out every thing i installed and told the customer i would not be able to work with any thing i installed that they "tapped" into. The project will not pass final, in my opinon. What the heck should i do to cover my self? Thanks