Genuine Roof bars do not fit

[AlodeRoma]

Hello and thank you for your time.
I have been back to BMWs after a decade of Range Rover and boy, what a difference from my last beemer.
Anyway I have purchased on marketplace some BMW E70 roof bars, no booklet, stickers fell off but owner said were on his now sold E70. They look exactly like the stock ones, 2 key, a BMW allen key, flipping padlock etc. I know about the fins on the front one but:
It seems too wide by a single cm or so, the rubbers make the positioning very awkward and the claps that should cling to the roof rail doesn't grab it at all, so that when I start locking it just slips over.
That makes me think that it might have been for a different roof rack, maybe thinner? the part code on the rubber feet is E70-I VL or VR Left and Right)
Any Help greatly appreciated.