Thrust bearings 44.2

[Tobamory]

Just building one for the first time alongside the K1 and I've never had to drop small balls into things before this is a first for me,

But when I came to the thrust bearing part where you have to balance 6 small balls on the washer I thought wtf, I managed it easily enough with grease as the glue,

But what do they actually do once screwed in? Seems like a perfect opportunity for a washer with balls already in