>>6220433same thing happened to me recently, but i'd had it sitting on my shelf for a couple of years before deciding to build it so i'm kinda fucked about reporting it to the store (Mandarake). Mine is missing a single runner of parts and the kit is long discontinued (pic related). I'm going to try scratchbuild the missing bits from the instruction pics.
Hope you get a more positive result anon, at least you noticed before it was too late.