What was Balasaheb Deo's specific problem with reading the Dnyaneshwari, and what vow did he make to Sai Baba about it?

Balasaheb Deo's main issue was his inability to read the Dnyaneshwari with any regularity, despite a strong desire to do so. Chapter 41 explains that whenever he attempted to read it, various obstacles would arise, or doubts would cloud his mind, preventing him from developing a deep connection with the text. This was frustrating because he could read other books without a problem. His struggle was so persistent that even a resolution to read just five verses daily failed. In response to this ongoing difficulty, Deo made a vow directly to Sai Baba, placing his faith at His feet. He firmly resolved that he would not attempt to read the Dnyaneshwari again until Sai Baba Himself gave him a direct command and the inspiration to do so.