To determine the spouse's benefit when the family maximum is involved:
         
            - 
               
                  • 
                     Reduce the OB for the maximum, then 
 
 
- 
               
                  • 
                     Reduce that share for age using the formula in RS 00615.201.
                      
 
 
If there is a change in the PIA, redetermine the spouse's benefit from the original
            month of entitlement up to the current entitlement or termination month as if the
            current family composition had always been in effect.