Push lever assembly

assuming you're talking about the clutch actuator ?
might have to release the tension on the internal rod (center of pressure plate) if it has worn a groove, the rod may be holding it stuck in place ?
 
try spinning it multiple ways while working it up ?
 
I was trying that. I just ran out of time. I'm gonna work at it more tomorrow. I think your right about the seal though. I'll keep you posted. Thanks a lot.