Not sure where to post this, but I just wanted to let someone know that the US Bill of Materials list has a typo.
The US bill of materials lists for the battery tubes two 1 .125" (1 1/8th) outside diameter tubes from McMaster (note Outside Diameter). However, the part number listed in the BOM for this item (8628k74) links to a 1.25 tube (1 1/4") tubes.
McMaster link from BOM
All that I think needs to be updated is the BOM spreadsheet to say "1.25in OD Nylon tube" as opposed to "1.125in OD Nylon tube".