i have finally had time to continue with my build.
over 30 single little blocks that i had etched for me, there not in the kit.
first of all a before and after photo.
the blocks are made up out of four parts, two round disks, the main outer block and the pin through the middle
first of the the two round disks are joined (laid on top of each other) then the outer block part is bent into shape, the disk is then slotted into the outer block part, once in position the pin is slotted into place