I was the one that got the jack off webbi. My jack did the same thing. It collapsed and then the sill collapsed. luckily, i had the wheel under the car at the time so it didn't drop that far, about 5 mm. Firstly, the arrow on the sill is NOT a jack point but to tell you the jack must not be placed beyond that point. Secondly, i now check every jack, even hydrolic ones. I even had to repair webbi's jack before i used it. The teeth on the bit that the car sits on become dis aligned so i had to bend them back to align with each other. Anyway, all is good now, good luck with your hunt, Autolusso have loads of them.