How to file an automotive mechanic's lien?

Question Details:

I repaired a truck for a customer. After several attempts to collect the repair bill the owner offered the title to the truck as payment. That was OK with me except the owner has lost the title and now I am unable to get any response out of the owner after the last conversation. I know that there is a time limit to file a lien, just don't know how to do it. In NC. Important Notice