[Closed] Hope pressfit bottom bracket preload

My Hope pressfit bottom bracket uses 71806 bearings which have, I believe, 15° of angular contact rather than being deep groove ball type. This fits with the fact that the instructions say the green seal should face out.

On their external bottom brackets, their set up video suggests zero preload, boardering on a little play.

However, I can't find any advice for the angular contact bearing. Logic says it would work better with some preload (but maybe not much as it's only 15°). Anyone know for a fact what it should be?