I'm struggling a bit with which bolts to use in certain spots on the new Silvio 2.0. In particular, I'm not sure which nut/bolt combination to use in the boom clamp that connections to the fork steer clamp (see attached pictures). If there is someone that can give me some guidance on the combination to use from the attached picture it would be much appreciated. Also, to the extent the answer does not involve items 2,3,4,5 where are these items used?