Perhaps it takes so long because he is the only game in town? A whole lot of demand and one place doing it correctly. You can't just go out and go from doing one block a day to 1000 and he may not want the headache of stepping up production. Not like hard working, knowledgeable, trustworthy, available guys are knocking at the door looking for jobs and trying to make do with the bad ones will cost you more than you make off them commonly as well as mess up your reputation.