so today i was taking a transmission out of an F150 to replace the clutch in it. i was supporting it, keeping it stable while the guy i was workin with was lowerin it down on the jack. the jack gave way, and i was stuck there basically catching a 350lb transmission. i strained/sprained every muscle in my back, my acl/knees, my right ankle, my biceps, triceps, pecs and delts, and my spine.