Hi the drive shaft appear stuck in the bottom of the powerhead. i have removed all bolt (5) and disconnected the shift rod. the lower pulled down 5/8 of an inch and stopped. I think I need to rebuild the lower or get a new one, it's stuck in fwd gear. Can i use wedges to pull the drive shaft from the lower case. will the water pump housing break and the woodruff key pull through. Any one have any experience with this type of situation. thanks...