No, I don't have direct access to El Sagrario records. I do my research just like you at the family history center. I wish it was online or something but it's not as far as I know. I think the only direct access would be in Chihuahua at the obispado office(diocese office). I just came back from a research trip to Chihuahua and I did some research at that office. I found one birth certificate-my grandfather's. I found the records even harder to read than civil registrar records. Those priests wrote in very small cursive, to save paper I guess. If you have any more questions write to me.