I would send it to Coharie. It's their gun, they will know how to make it right. If it's new it should still be under warranty, so let them do the work and try it again.
I think that if you have another smith work on it, it will void the warranty and then Coharie won't want to work on it, or will charge you to fix it. Some people get bent out of shape about this, but I don't understand why. This is how it is with most non-firearm related manufacturers, so I can understand why they have this policy. If it's used and out of warranty, you might check with AviatorDave or Ghilliebear or some of the other very skilled builders that hang out here on the forum.
That's my $0.02