I just bought a 425AWS. The deck is in the up position. Both hydraulic levers are froze, will not move. It has a 60 inch deck. Can not see what the levers control. I read on Google about people spraying and tapping a valve to break the valve loose. I cannot locate the valve. Does anyone have a pic? Should I remove the deck? The 425 sat for 5 years before I bought it.