Embarred to even ask this one. But I just got a hi-lift jack sent to me (60" extreme model). I have never had one before. Tested it out without weight on it. Went up just fine. Had to put a lot of pressure on the lever to get it into the down position. Finally it reversed OK. Now I cannot get the lever back into the up position. Pulled on it like crazy, WD40'd, put on my gloves and tried again. It goes up a bit but can't seem to stay up. Should this be so difficult? Or is something wrong. Or am I doing something stupid. The jack is brand new but it was sent to me UPS without a box by the vendor. Not sure if that might have screwed it up. Any ideas would be appreciated.