The configuration of the anchor has it setup so that the angle of pull is intended to go straight perpendicular to the face. The actual line of pull for a TR, belay, or rap is 45 degrees to the left of perpendicular though. The original configuration was thus asymmetrically loaded and caused the left bolt to loosen over time as it has been loaded and unloaded. The new glue-ins are rotated 45 degrees to the left to be inline with this line of pull.
This anchor replacement was made possible with hardware and glue donated by the ASCA.
Original anchor configuration
New anchor bolts on Dr. Dias. Rotated 45 degrees to be better inline with direction of pull.
The new configuration. Stainless end-to-end. 3/8″ chain and quicklinks and 11mm rap rings.