I bought my first set of wheels from MG this year. I had difficulty reaching him through both email and phone calls. New builds take a back seat to wheel service and active builds. You have to be persistant. It's a hassle, but you are buying quality and service. This man stands behind his work.
In my experience, you never really get to know a person/businesss until you encounter problems. I've had difficulty with my rear wheel. It's on a second return trip to him. He paid shipping on both ocassions. He is forthright and concerned.
Phoning is your best bet. He has been especially attentive to my problems.