The way things sound now, it appears that you have been led down "The Garden Path" and you are at the mercy of this dealer. Like some other dealers, they could care less about you and the horse you rode in on.
I'm not sure how N.C. DMV works, but I wouldn't have left N.C. without all the paper work filled out and title in my hand if you paid cash for the car.
I think sending/mailing a temp. tag across state lines is not kosher.
As far as the warr. goes, are you going to drive that thing to N.C. everytime you think it needs work done under warr. ?
I'm suprised they even gave you a warr. on a car thats not legal in the U.S.
If you are as good a mechanic as you say you are, Fix the damn car yourselve before you have a stroke. Are they buying the gas for you to drive up to N.C. and back ? If not, take a day off and the gas money you saved and do the job.
There is a point that you get to when the " principal of the thing" just isn't worth all the crap you went though. N.C. doesn't care, your car doesn't care and the grass in your yard doesn't care. You are the one thats going to be trundle off to the "Farm" because of some people that don't know what they are doing or even care . :roll: