Carlos, if you add lead tape to the head of the racquet, the SW will always be higher. What you have to do is try to match the lower SW racquet to the higher SW racquet, because you won't be able to decrease the SW.
While doing this, also try to match the static weight and the balance. Then you will have matched racquets.
2 Yonex VCore Tour G - Kimony TecniLeather grip / 320g unstrung - strings TBD