What are you working with? Fast Classic, XFI, Big Stuff 3...If your not worried about cost and want it done RIGHT fly someone in. I got my man Jack Cotton to come down here and I wouldnt have done it any different.
Who did you get your product from?
A couple of the best in no specific order that I know travel to tune are...
Jack Cotton
Cal Hartline
Otto J.
Im sure im leaving some out. Usually if you buy from a good vendor they will take care of you.