I agree Flock. I was trying to take some bike chains and sprockets through at Berlin SFX a few weeks ago - having previously taken just one of each through, just to make sure it was OK.
They found them and no, I wasn't allowed to take them through ... except the pillocks didn't take them all so I was left with the inconvenience of arranging for them to post some of them on to me while the rest remained in my luggage ...