I would suggest contacting him via the email he provided. I am guessing there are different reasons for each car. Remember the manual transmission cars were released before the automatics, so expect some delay from that. Early build cars sat in Mexico longer due to their placement in the lot. I talked to the reservation center yesterday about the issues, and they said that if the cars have 1 psi less air pressure in a tire, it would be reason to hold a shipment until it is right. I don't mind waiting to get something right, but that kind of stuff is usually fixed at the factory. Working in manufacturing for years, if something happened to one car, they would stop the entire lot. For example, if one car had tires too low on pressure, they would contain all the units build between the last good one until the bad one to isolate the issue. I have no info to support this, but its how manufacturing works. Once it gets shipped, it is out of the hands of the plant. My order has something odd going on since no shipping company claims to have it and the ETA dropped off the order. I doubt anyone has that issue, so everyone has something slightly different going on.
The best thing to do is talk to your dealers, and be relentless. The dealer is your 1st contact point, and don't let them forget you are a customer and are not happy. If you get "we are too busy to talk to you" crap, then move up the ladder. Get your dealers on the phone and get them to find out what is going on. They have your VIN and order number, and should be handling the situation. The dealer is making money off the sale, so make them work for it.