head bolt torque

when you are done at the final torque ...your done after 500 miles or what ever they recommend re torque them unless the head gasket manufacturer says not to i NORMALLY USE ABOUT 500 MILES FOR RETORQUE MILEAGE (ITS NOT THE ACTUAL MILEAGE IT IS THE REPEATED HEATING AND COOLING OF THE ENGINE AND THE NORMAL FOR 500 MILES IS ABOUT RIGHT
the way I DO IT IS FOLLOW THE SAME TORQUE PATTERN AND ONE AT A TIME LOOSEN 1/4 TO 1/2 TURN THEN PULL BACK DOWN TO THE FINAL TORQUE SETTING THEN GO TO THE NEXT ONE IN THE PATTERN REPEAT UNTIL DONE