So i hate to be the one to bring this report but everyone makes mistakes. i had a power unti with pump and radiator attached on stands. i went to cut a support out out to move it down between the frame holding the rubber mounts to the engine. when i cut it the fram pieces kicked out and it tipped off the stand right in front of me. so obvious but easy to miss. Maybe if the engine was centered perfectly on the stands it might not have come off the stands but it wasnt. so in the end i didnt have a back up plan i should have had the A frame over it .