Seventh Circle Audio

I hope I am not just missing something but I am nearing the end of my N72 (rev 3.3) build and I have 4 components unaccounted for in the assembly instructions. Item 21 on the BOM (L3-L6) 1000pF line filters.

I can see their placement on the board and I can see them in the schematic so I am assuming that these are not optional components but I thought I'd double check before soldering them in.

Thanks.