I bet it was the bending planks! I will never know if they had screwed them down!
Fortunatley some of my customers still look the other way to safety. Last week operating a scissor lift with no permit and harness. But then it wouldn't go high enough outside, so they used an indoor electric forklift with a basket, to hoist me up. At one point the truck hit uneven pavment, and I thought that was it. Still not high enough, so we put a ladder in the basket!
Did I mention I don't like heights? Some of us, just have to get things done, if we want to get paid and earn a living.