After storage for 14 years (4826 miles) Start up went fine, but the clutch will not disengage. I've changed oil to 10W40 Mobile 1 Syn, and run it up to operating temperature a few times with no change. I removed the slave cylinder and it appears normal. I'm wondering if striking the push rod with a light hammer and a hardwood block might work to free up the clutch plates, if the problem is stuck plates...could I be/go wrong? Thanks!