Yeah bonnet was definitely down properly and 99% certain saftey catch was working, pretty sure one of the times it happened was when i hit a big pot hole, dunno why the saftey didn't hold it though. If i had another one i would put like bonnet pin type thing with a short bit of metal rope from the rad support to the inside of bonnet somewhere so it couldn't happen. Bonnet's were hard enough to find 15years ago let alone now.