V3.1 cut length discrepancy? 140mm or 160mm?

I’m about to order my 2020 extrusion and I want it precut… do I cut at 140 or 160? I see a discrepancy.
there are measurement discrepancies between the BOM and the build https://ohai.satnogs.org/project/satnogs-rotator-v3-mechanical-assembly/hardware/
one states the 2020 measurements as 160mm and 102mm the BOM(https://gitlab.com/librespacefoundation/satnogs/satnogs-rotator/blob/master/rotator-bom.ods) included in 3.1 states 140mm and 100mm…
which is the ideal cut length?