Why did Das Ganu go to see Sai Baba in Shirdi, and what was the problem he was having with his writing?

Das Ganu was writing a commentary called the 'Ishavasya-Bhavartha-Bodhini' to explain the Ishavasya Upanishad in simple language for those who didn't know Sanskrit. As Chapter 20 explains, although he managed a word-for-word translation, he felt he couldn't grasp the deep, internal meaning of the scripture, and his mind 'found no joy' in the work. When a significant doubt arose from this struggle, he decided to travel to Shirdi to seek a resolution from his Satguru, Sai Baba.