[Zipper]

OK, I've had a look at the instructions at home...

You should have got; (This is what I had with mine)

Four upper rod guides (the white ones that look like top hats)
Four lower rod guides (plain white spacers)
Eight red O-rings
Eight black spacers
Eight 0.1mm silver shims
Four 0.2mm silver shims

You put one upper rod guide into each bottom of the shock bodies, then into the cartridge place one of the white lower rod guides, then red o-ring, black spacer, two 0.1mm shims, black spacer and then another red o-ring. Then screw into the bottom of the shock body.