Definitely ship the, because if he screws them up worse, he'll be able to replace them, and he also knows what he's doing when it comes to headers. get them fixed locally, and you may get an appology, which is not what you want.

I say this from experience, I'm about 2-3 hours south of you, and there is no one with in like 4 or 500 miles that I'd even think about trusting with a set of Hytech headers!!

Especially if the fix is free. Ship them out, and save yourself the time and agrivation of possibly not having it done right.

Later,
Aj