From: Rabbi Moshe Sofer
To: Unknown recipient
The Chasam Sofer reaffirms his earlier rulings in response to analytical challenges: a Ches without a choter is invalid per the Rivash, and it is permitted to scrape touching letter parts within God's Name in a Sefer Torah since the scraping constitutes repair, not destruction. He also defends his reading of the lev Beis Din masneh principle as unnecessary in the Pesachim case.
Source: Shu"t Chasam Sofer YD §268