Unless you know someone personally which has the equipment to do a proper calibration, and you trust them to do a good job, AVS's calibrator list is probably the best source.
Indeed, contact the person who you find. Ask them what they think of a break/burn-in procedure. If you or they do believe that the panel does change over the first 100-200 hours, it would probably be best to get the set through that time, and let it settle a bit before attempting a fine calibration.
When the calibrator is there, watch what he's doing. Ask questions, get explanations of what each step is accomplishing. Most calibrators are also enthusiasts, and will be happy to talk about the improvements which are being made. That'll also help you be reassured that the work being done is helping.
