I spent much time to customize this frame! In my opinion it needs leather grip and some lead tape to achieve something like 348g strung, 31.5 cm balance and 320 SW at least. (mine was 312 SW originally). Don't be afraid about using lead tape! It makes difference
Of course everyone needs something other.
This customization let me to get more depth especially. It's more maneuverable and better feel.
It's really amazing racquet. However I wait for better paint-job from the Wilson !