Waheguru
Here is a Taksali Gutka of Damdami Taksal which Purtan Singhs used. Baba Mohan Singh Bindranwale expliens Shudh Ucharan on hard words. Baba Ji at the end of the Gutka comments on how Chaupai Sahib was cut short and who did it and Baba Gurbachan Singh's thought on it too. The end part of the Gutka is worth reading it also expliens which doras were cut out and Baba Ji shows from Purtan Granths that these doras were in the Nitnem. Also,has many other interesting facts worth reading.
Taksali Gutka
Waheguru