Aloha, I have to work under the machine on rough, dangerous slopes and loose gravel with volcanic soil and mud, I understand that I'm violating such a fundamental principle of physics as gravity. It's not cool or funny. It sucks. I will trust these pads with my life and see how it holds up. Please don't do what I'm doing to jack the car up. It is dangerous and irresponsible to hurt nerves. I have no choice when you live in a volcano Aloha 'Ayna