Lind was too weak to do any major repairs but even at his peak, he was uncertain what he could do. Modifying a weapon like the staff was easy, recreating it or restoring it, however, was beyond him.
The issue was he was not Sun. His own intent, harmony, and other factors would pollute the process. Normally, that was a good thing, yet not with the staff Sun had bonded to.
It was literally a part of his friend. He could no more recreate that unique set of circumstances than he could manipulate a soul to dance to his tune without harming it or changing it.
Aside from all that, he simply had nothing left to use! The Western Lament was years away, even tearing through space, so he had no way to get what he needed.
He also doubted the source forest still existed as well. The destruction of that continent left many gaps in ancient resources.
