Looking over the documents, there are a few pieces of information that are lacking or inconsistent.
1. What is the value of R18? The schematic says 82K, a nearby annotation says 80K. The build description says 120K. I believe @zayance used 160K for the resistor, which was labelled R26.
2. What is the value of R23? The schematic says 22K, the build description says 2K2.
3. What are the values of R33 and R34? The schematic says 100R, the build description says 2K2.
4. What is the value of R24? The schematic says 100R, a nearby annotation says 200R. I believe @zayance used 200R for the resistor, which was labelled R41.
5. What are the values of C20/C21? The schematic says 22pF, the build description says 56pF.
6. Which components are omitted during installation? As far as I can gather, the omitted components are C20, C30, C40, and R25.
In my most recent commit, which edits the BOM and guide, I assume that the answers are 160K, 22K, 100R/100R, 200R, and 22pF. Please feel free to correct me.