I just get the alloy steering levers, when I tight the screw to fix them on the rack I noticed than it's close to be impossible to tight it properly and let the steering be free.
To resolve this I use a reamer to improve the inner flange diameter over 5.5mm and under 6.0mm. Then I place between each bearings a 1mm spacer and assemble everything as originally. Threadlock is highly recommended to secure the screws in arms.