I have a 1988 Evinrude 225 that is in need of some new seals and a new waterpump (most likely) I have it in reverse and have removed all the lower unit bolts. I have also removed the shift rod retaining bolt at the power head and it is free. What the heck is holding it on? the unit moves back and forth but wont release. I dont want to put alot of pressure on it for fear of breaking something. Any ideas out there? JACK-NJ